Search Federal and State Laws and Incentives

SmartWay Transport Partnership

The SmartWay Transport Partnership is a market-based public-private collaboration between the U.S. Environmental Protection Agency (EPA) and the domestic freight industry. This partnership is designed to reduce greenhouse gases and air pollution by accelerating the adoption of advanced technologies and operational practices which increase fuel efficiency and reduce emissions from goods movement. EPA provides partners with performance benchmarking tools, fleet management best practices, technology verification, public recognition and awards, and use of the SmartWay Transport Partner logo to demonstrate their leadership to customers, shareholders and other stakeholders. The SmartWay Transport Partnership is working with partners to test and verify advanced technologies and operational practices that save fuel and reduce emissions. Grants are available to states, non-profits, and academic institutions to demonstrate innovative idle reduction technologies for the trucking industry. For more information, see the SmartWay Transport Partnership website.

Congestion Mitigation and Air Quality (CMAQ) Improvement Program

The CMAQ Program provides funding to state departments of transportation (DOTs), local governments, and transit agencies for projects and programs that help meet the requirements of the Clean Air Act by reducing mobile source emissions and regional congestion on transportation networks. Eligible activities include transit improvements, travel demand management strategies, congestion relief efforts (such as high occupancy vehicle lanes), diesel retrofit projects, alternative fuel vehicles and infrastructure, and medium- or heavy-duty zero emission vehicles and related charging equipment. Projects supported with CMAQ funds must demonstrate emissions reductions, be located in or benefit a U.S. Environmental Protection Agency-designated nonattainment or maintenance area, and be a transportation project. For more information, see the Bipartisan Infrastructure Law CMAQ fact sheet and CMAQ Improvement Program website.

(Reference Public Law 117-58, Public Law 112-141, 23 U.S. Code 149, and 23 U.S. Code 151)

Clean Cities Coalition Network

The mission of Clean Cities Coalition Network is to foster the economic, environmental, and energy security of the United States by working locally to advance affordable, domestic transportation fuels and technologies. Nearly 100 volunteer coalitions carry out this mission by developing public/private partnerships to promote alternative and renewable fuels, idle-reduction measures, fuel economy, improvements, and emerging transportation technologies. The Clean Cities Coalition Network provides information about financial opportunities, coordinates technical assistance projects, updates and maintains databases and websites, and publishes technical and informational materials. For more information, see the Clean Cities Coalition Network website.

Clean School Bus

The U.S. Environmental Protection Agency’s (EPA) Clean School Bus program provides funding to eligible applicants for the replacement of existing school buses with clean, alternative fuel school buses or zero-emission school buses. EPA may award up to 100% of the cost of the replacement bus, charging equipment, or fueling infrastructure. Alternative fuels include electricity, natural gas, hydrogen, or propane. Eligible applicants are school districts, state and local government programs, federally recognized Indian tribes, non-profit organizations, and eligible contractors. EPA will prioritize funding for high-need local education agencies; low income, rural and tribal schools; and, applications that cost share through public-private partnerships, grants from other entities, or school bonds. For more information, including funding availability, timeline, and application materials, see the EPA Clean School Bus website.

(Reference Public Law 117-58 and 42 U.S. Code 16091)

Diesel Emissions Reduction Act (DERA) Program

The U.S. Environmental Protection Agency established the DERA Program to reduce pollution emitted from diesel engines through the implementation of varied control strategies and the involvement of national, state, local, and tribal partners. DERA includes programs for existing diesel fleets, regulations for clean diesel engines and fuels, and regional collaborations and partnerships. For information on available grants and funding opportunities, see the DERA Funding website.

Idle Reduction Equipment Excise Tax Exemption

Qualified on-board idle reduction devices and advanced insulation are exempt from the federal excise tax imposed on the retail sale of heavy-duty highway trucks and trailers. The exemption also applies to the installation of qualified equipment on vehicles after the vehicles have been placed into service. For a list of eligible products and additional information about product exemption eligibility criteria, see the U.S. Environmental Protection Agency's (EPA) SmartWay Technology Program Federal Excise Tax Exemption website. The exemption applies to equipment that EPA, in consultation with the U.S. Department of Energy and the U.S. Department of Transportation, identified as reducing the idling of the tractor at a motor vehicle rest stop or other location where such vehicles are temporarily parked or remain stationary. Only equipment sold on or after October 4, 2008, is eligible. For more information, see IRS Publication 510 and the instructions for IRS Form 720, which are available on the IRS Forms and Publications website. (Reference 26 U.S. Code 4053)

Alternative Fuel Loans

The Oregon Department of Energy administers the Small-Scale Local Energy Loan Program which offers low-interest loans for qualifying projects. Eligible alternative fuel projects include fuel production facilities, dedicated feedstock production, fueling infrastructure, and fleet vehicles. Loan recipients must complete a loan application and pay a loan application fee. For more information, see the Energy Loan Program website. (Reference Oregon Revised Statutes 470)

Alternative Fuel and Idle Reduction Grants

The North Carolina Department of Environment Quality (DEQ) provides grants to repower, replace, and convert eligible on- and off-road vehicles and equipment to alternative fuels and fuel-efficient technology. Equipment must be U.S. Environmental Protection Agency or California Air Resources Board verified. For more information, including a list of eligible technologies, see the DEQ Mobile Sources Emissions Reductions Grant website.

Clean Vehicle and Infrastructure Grants

The Texas Commission on Environmental Quality (TCEQ) administers the Emissions Reduction Incentive Grants (ERIG) Program and Rebate Grants Program as part of the Texas Emissions Reduction Plan (TERP). The ERIG Program provides grants for various types of clean air projects to improve air quality in the state's nonattainment areas and other affected counties. Eligible projects include those that involve replacement, retrofit, repower, or lease or purchase of new heavy-duty vehicles; alternative fuel dispensing infrastructure; idle reduction and electrification infrastructure; and alternative fuel use. The Rebate Grants Program provides grants to upgrade or replace diesel heavy-duty vehicles and non-road equipment. Qualifying projects must reduce emissions of nitrogen oxides or other pollutants by at least 25% as compared to baseline levels and must meet operational and fuel usage requirements. For more information, including eligibility and the application form, see the TCEQ TERP website. (Reference Texas Statutes Health and Safety Code 386 and Texas Administrative Code 114.620-114.629)

Heavy-Duty Truck Idle Reduction Requirement

A driver of a diesel-fueled vehicle with a gross vehicle weight rating of more than 10,000 pounds may not idle the vehicle’s primary engine for more than five consecutive minutes at any location, and is not allowed to operate a diesel-fueled auxiliary power system (APS) on the vehicle for more than five minutes when located within 100 feet of a restricted area. Exceptions apply in certain situations and for certain vehicles. Any internal combustion APS used in California must comply with applicable state off-road and/or federal non-road emissions standards and test procedures for its fuel type and power category to ensure that emissions do not exceed the emissions of a truck engine operating at idle. Model Year 2008 and newer heavy-duty diesel engines must be equipped with non-programmable engine shutdown systems that automatically shut down the engine after five minutes of idling or optionally meet a stringent nitrogen oxide idling emissions standard. A heavy-duty diesel engine certified for optional idling emissions standards must have a “certified clean idle” label, issued by the engine manufacturer, affixed permanently on the driver’s side hood of the truck. Similarly, off-road diesel engine APSs fitted with a proper, verified level 3 diesel particulate filter must have a “verified clean APS” label, issued by the APS manufacturer, affixed permanently on the driver’s side hood of the truck.

Operators of trucks equipped with sleeper berths are required to shut down the engine manually when idling more than five minutes at any location within California and are subject to fines for violation. The California Department of Motor Vehicles will not register, renew, or transfer registration for any vehicle operator who has received a violation until the violation is cleared.

For more information, see the California Air Resources Board Heavy-Duty Vehicle Idling Emission Reduction Program website.

(Reference California Code of Regulations Title 13, Section 2485)

Idle Reduction Requirement at Schools

A school bus driver must turn off the engine upon stopping at a school, or within 100 feet of a school, and may not turn the engine on more than 30 seconds before departing from the location. When the bus is at least 100 feet away from a school, the driver may not idle the engine for more than five consecutive minutes, or for periods totaling more than five minutes during any one hour period. Transit and commercial vehicle operators may not idle for more than five consecutive minutes at each stop within 100 feet of a school, or for periods totaling more than five minutes during any one hour period. Exemptions apply for necessary idling while stopped in traffic, at traffic signals, and at the direction of law enforcement personnel. For more information, see the California Air Resources Board School Bus Idling Airborne Toxic Control Measure website.

(Reference California Code of Regulations Title 13, Section 2480)

Idle Reduction Requirement

Motor vehicles licensed for commercial or public service may not idle for more than three minutes in commercial or residential urban areas, unless the engine is providing auxiliary power for purposes other than heating or air conditioning. Tour buses and diesel vehicles are not permitted to idle for more than 10 minutes.

(Reference Virginia Administrative Code 9-5-40-5670(C))

Idle Reduction Requirement

A motor vehicle engine may not operate for more than five consecutive minutes when the vehicle is not in motion, with the following exceptions:

1. when traffic conditions or mechanical difficulties do not allow the vehicle to operate;
2. when it is necessary to operate heating, cooling or auxiliary equipment installed on the vehicle;
3. to bring vehicle to manufacturer’s recommended operating temperature; or
4. if idling is necessary to accomplish the intended use of the vehicle.

(Reference Maryland Statutes, Transportation Code 22-402)

Idle Reduction Requirement

School bus operators may not idle a school bus engine for more than three consecutive minutes except under the following conditions: uncontrollable traffic conditions or mechanical difficulties; operation of heating, cooling, safety or auxiliary equipment; outdoor temperatures below 20 degrees Fahrenheit; maintenance of a safe temperature for students with special needs; school bus repair; or receipt or discharge of passengers on a public highway or road. An infraction applies to violators of these regulations for the first offense and a fine from $100 to $500 applies for each succeeding offense.

(Reference Connecticut General Statutes 14-277)

Idle Reduction Requirement

Diesel truck or bus engines may not idle for more than 15 consecutive minutes. Exemptions apply to diesel trucks or buses for which the Nevada State Environmental Commission has issued a variance from this requirement, or diesel trucks and buses that are emergency vehicles; are used for removal of snow or to repair or maintain other vehicles; are stopped due to traffic congestion; are undergoing repair or maintenance; produce emissions contained and treated according to State Environmental Commission methods; or must idle to perform a specific task. (Reference Nevada Administrative Code 445B.576)

Idle Reduction Requirement

The owner or operator of a diesel-powered vehicle must limit the length of time their vehicle remains idle. The limit is based on the outside temperature, as follows: above 32 degrees Fahrenheit, 5-minute limit in any 60-minute period; between 32 and -10 degrees Fahrenheit, 15 minute limit in any 60-minute period; below -10 degrees Fahrenheit, no limit. Certain vehicles are exempt from the regulation, including vehicles in traffic, emergency vehicles, vehicles providing power take-off for refrigeration or lift gate pumps, vehicles idling for required maintenance or diagnostic purposes, and vehicles supplying heat or air conditioning for passenger comfort during transportation.

(Reference New Hampshire Department of Environmental Services, Administrative Rules Env-A 1102.02 and 1102.03)

Idle Reduction Requirement

A diesel- or gasoline-powered motor vehicle may not idle for more than three consecutive minutes, except under the following conditions: 1) to operate power takeoff equipment including, but not limited to, cement mixers, refrigeration systems, and delivery vehicles; 2) if it is a private passenger vehicle; or 3) to operate heating equipment for five minutes when the ambient temperature is 32 degrees Fahrenheit or below. (Reference District of Columbia Municipal Regulations Title 20, Chapter 9, Section 900.1)

School Bus Idle Reduction Requirement

All local boards of education in North Carolina have adopted idle reduction policies prohibiting school buses from idling unnecessarily on school grounds or warming up for longer than five minutes. For more information, including a sample policy and administrative procedure, see the North Carolina School Boards Association Reduced Idling Materials website.

Idle Reduction Requirement

A gasoline-fueled motor vehicle is not allowed to operate for more than three consecutive minutes when the vehicle is not in motion, with the following exceptions: 1) a vehicle stopped in a line of traffic; 2) a vehicle being inspected by a state or federal motor vehicle inspector; 3) an emergency vehicle operating in an emergency situation; 4) a vehicle being repaired or serviced; 5) a vehicle whose primary or secondary power source is used for a mechanical operation other than propulsion; and 6) a vehicle parked in a non-residentially zoned area with a sleeper berth being used for sleeping or resting. A gasoline bus loading or unloading passengers may idle for 15 consecutive minutes in a 60-minute period.

A diesel-fueled motor vehicle is not allowed to operate for more than three consecutive minutes when the vehicle is not in motion. If the vehicle is not in a parking space equipped with idle reduction electrification technology, the following exceptions apply: 1) a vehicle stopped in a line of traffic; 2) a vehicle whose primary power source is used for a mechanical operation other than propulsion; 3) a vehicle being inspected by a state or federal motor vehicle inspector; 4) an emergency vehicle operating in an emergency situation; 5) a vehicle being repaired or serviced; 6) a vehicle with a sleeper berth that is equipped with a Model Year 2007 or newer engine and/or a functioning diesel particulate filter; and 7) a vehicle that uses a technology designed to reduce engine idling, such as auxiliary or alternate power units, generator sets, or bunk heaters. Additionally, diesel vehicles may idle for 15 consecutive minutes when the vehicle's engine has been stopped for at least three hours if the temperature is below 25 degrees Fahrenheit, and a diesel bus loading or unloading passengers may idle for 15 consecutive minutes in a 60-minute period. Violators will be issued fines.

(Reference New Jersey Administrative Code 7:27-14.3 through 7:27-14.10 and 7:27-15.8)

Idle Reduction Requirement

A motor vehicle may not idle for more than five consecutive minutes. This regulation does not apply to: 1) vehicles being serviced, provided that operation of the engine is essential to the repair; 2) vehicles delivering or accepting goods or merchandise for which engine assisted power is necessary and substitute alternate power cannot be made available; or 3) vehicles requiring auxiliary power for an associate power need other than movement that cannot be substituted by an alternate power source provided that such operation does not cause or contribute to air pollution. Violators are subject to fines. Local boards of health, local police, and state and federal officials may enforce the state anti-idling law.

(Reference Massachusetts General Laws Chapter 90, Section 16A, and and Department of Environmental Protection Regulations 310 CMR 7.11(1)(b))

Alternative Fuel and Idle Reduction Grants

The Small Business Advantage Grant Program provides matching grants of 80% of project costs, up to $8,000, to enable a Pennsylvania small business to adopt or acquire energy-efficient or pollution prevention processes or equipment. Pennsylvania trucking companies and independent truckers may use the funding to purchase U.S. Environmental Protection Agency SmartWay verified anti-idling technologies. Projects may not begin until applications are approved. Grants are available on a first-come, first-served basis. For more information, see the Small Business Advantage Grant Program website.

Heavy-Duty Idle Reduction Requirement

Heavy-duty vehicles with a gross vehicle weight rating greater than 8,500 pounds may not idle for more than five consecutive minutes when the vehicle is not in motion. Exceptions apply, including when idling is necessary due to traffic conditions; to maintain temperatures (under regulation) for passenger comfort; to provide auxiliary power or for maintenance purposes; to recharge batteries in hybrid electric vehicles; for electric vehicles; and for emergency service vehicles.

(Reference New York State Department of Environmental Conservation Regulations Chapter III, Subpart 217-3)

Idle Reduction Requirement

Motor vehicles may not idle unnecessarily for longer than five consecutive minutes during any 60-minute period. This includes heavy-duty diesel vehicles used to perform any state public works contracts. Unnecessary idling does not include circumstances exempted by regulations the Rhode Island Department of Environmental Management (DEM) has adopted, such as when it is necessary to operate heating and cooling equipment to ensure the health or safety of drivers and passengers. Other vehicles exempt from these requirements include, but are not limited to, the following:

• Emergency response, public safety, or military vehicles
• Armored vehicles being loaded or unloaded
• Non-road vehicles
• Vehicles making deliveries of fuel or energy products.

Violators of these regulations will be fined up to $100 for the first offense and up to $500 for each succeeding offense.

(Reference Rhode Island General Laws 23-23-29.2, 31-16.1 and 31-41.1-4)

Emissions Reductions Grants

The Carl Moyer Memorial Air Quality Standards Attainment Program (Program) provides incentives to cover the incremental cost of purchasing engines and equipment that are cleaner than required by law. Eligible projects include heavy-duty fleet modernization, light-duty vehicle replacements and retrofits, idle reduction technology, off-road vehicle and equipment purchases, and alternative fuel and electric vehicle infrastructure projects. The Program provides funds for significant near-term reductions in nitrogen oxide emissions, reactive organic gases, and particulate matter emissions. Funding is available until January 1, 2024. The California Air Resources Board, in consultation with local air districts, must convene working groups to evaluate the Program’s policies and goals.

(Reference California Health and Safety Code 44275-44299.2)

Idle Reduction Requirement

A person that operates a diesel powered motor vehicle with a gross vehicle weight rating (GVWR) of less than 8,000 pounds may not cause or allow the motor vehicle, when it is not in motion, to idle for more than a total of 10 minutes within any one-hour period. If the vehicle is waiting to weigh, load, or unload cargo or freight, it may idle for up to 30 minutes within any one-hour period. Applicable areas include the counties of Cook, DuPage, Lake, Kane, McHenry, Will, Madison, St. Clair, and Monroe, and the townships of Oswego (Kendall County) and Aux Sable and Goose Lake (Grundy County, as well as any other county with more than 3 million people but outside a municipality with less than 2 million people when within 200 feet of a residential area). Exceptions apply, including those pertaining to emergency vehicles, vehicle weight, traffic, auxiliary power unit use, remote starter systems, school buses, outside temperature, and more.

(Reference 625 Illinois Compiled Statutes 5/11-1429)

Idle Reduction Technology Loans

The Arkansas Department of Environmental Quality (ADEQ) provides small business loans to institute pollution control and prevention measures. Idle reduction technologies for heavy-duty trucking applications are eligible. The maximum loan amount is $45,000, with a $65,000 lifetime maximum for one business, with loan terms up to 10 years. An eligible business must employ 100 individuals or less and demonstrate proof of profitability and the ability to repay the loan. For more information, including a loan application, see the ADEQ Environmental Assistance Low-Interest Loans for Small Businesses website.

Diesel Emissions Reduction Grant Program

The Ohio Environmental Protection Agency (Ohio EPA) provides Diesel Emissions Reduction Grants (DERG) for projects that reduce emissions by retiring and replacing diesel public transit buses. Eligible projects must achieve a minimum funding match of 20% from non-state and non-federal sources. Funding for this program is provided by the U.S. Department of Transportation Federal Highway Administration’s Congestion Mitigation and Air Quality Improvement (CMAQ) Program. For more information, including application periods, see the Ohio EPA DERG website.

(Reference Ohio Revised Code 122.861)

Alternative Fuel Vehicle (AFV), Idle Reduction Technologies, and Diesel Retrofits Funding

The Clean Fuel Advanced Technology (CFAT) project provides grant funding to reduce transportation-related emissions for areas in nonattainment with the National Ambient Air Quality Standards. A project that is adjacent to these areas may also be eligible for funding if the project will reduce emissions in eligible counties. For more information, including current requests for proposals, see the CFAT website.

Idle Reduction and Natural Gas Vehicle (NGV) Weight Exemption

Any diesel vehicle or combination of vehicles equipped with idle reduction technology may exceed the state’s gross and axle weight limits by up to 400 pounds (lbs.) to compensate for the additional weight of the idle reduction technology. Upon request, vehicle operators must be able to provide written proof of the technology’s weight and that the idle reduction technology is fully functional at all times. A vehicle primarily powered by natural gas may exceed the state’s gross vehicle weight limits by a weight equal to the difference between the weight of the vehicle with the natural gas tank and fueling system and the weight of a comparable vehicle with a diesel tank and fueling system. The NGV maximum gross weight may not exceed 82,000 lbs.

(Reference Kansas Statutes 8-1908, 8-1909, and 8-1917)

School Bus Idle Reduction Pilot Program

As part of the Children’s Environmental Health Project, the Arizona Department of Environmental Quality (ADEQ) administers the School Bus Idling Pilot Program (Program) to reduce bus idling near schools. ADEQ has worked with school districts to develop a draft bus idling policy, which many of the school districts involved in the pilot program have implemented. The Program’s best practices include: having drivers turn off buses upon reaching a school or other location and not turn on the engine until the vehicle is ready to depart; parking buses at least 100 feet from a school air intake system; and posting appropriate signage advising drivers to limit idling near the school. For more information, refer to the ADEQ School Bus Idling Pilot Program website.

School Bus Idle Reduction Requirement

School bus operators must turn off the bus engine immediately after arriving at a student loading and unloading area located on school grounds and may not start the engine until the bus is ready to leave the school grounds. In addition, operators may not idle the engine for more than five minutes in a 60-minute period on school grounds. Exceptions include periods when the engine is necessary to operate special equipment for disabled persons; to address safety, traffic, health, or emergency concerns; or to service the vehicle.

(Reference Vermont Statutes Title 23, Chapter 13, Section 1282 and Vermont State Board of Education Rules and Practices 6001 through 6005)

Idle Reduction Technology Loan Program

The Minnesota Pollution Control Agency’s Small Business Environmental Assistance Program provides low-interest loans up to $75,000 to qualified small businesses to finance environmental projects such as capital equipment upgrades that meet or exceed environmental regulations, including idle reduction technologies. For more information, including eligibility requirements, see the Low-Interest Environmental Loans website.

Alternative Fuel Technology Weight Exemption

A vehicle equipped with a fully functional idle reduction system designed to reduce fuel use and emissions from engine idling may exceed the maximum weight limitations by up to 550 pounds (lbs.) to accommodate the added weight of the idle reduction technology. Any natural gas vehicle or electric vehicle may exceed the limits by up to 2,000 lbs. (Reference Oregon Revised Statutes 818.030)

Heavy-Duty Vehicle Emissions Reduction Grants

The Goods Movement Emission Reduction Program (Program) provides funding for projects that reduce emissions from freight movement in the state, including truck stop electrification infrastructure development and heavy-duty truck replacement, repower, or retrofit. For more information about funding application opportunities, see the Program website.

(Reference California Health and Safety Code 39625-39627.5)

School Bus Idle Reduction Regulations

School bus drivers must turn off bus engines as soon as possible at loading and unloading areas and only restart the engine when it is time to depart. Exceptions include extreme weather conditions and idling in traffic. At bus depots, drivers are required to limit engine warm-up to the time recommended by the engine manufacturer. All school bus drivers in the state receive a minimum of 30 minutes of idling reduction instruction during their annual service training. In addition, school districts must revise bus schedules to maximize efficiency and assign the cleanest buses to the longest routes. For more information, see the Utah State Board of Education Pupil Transportation website and the Utah School Bus Idling Standards.

(Reference Utah Code 41-6a-1308 and and Utah Administrative Code 277-601-1 through 277-601-3)

Idle Reduction Requirement

A commercial vehicle or gasoline powered vehicle may not idle for more than five minutes during any 60-minute period. Exemptions are allowed for the following: 1) a vehicle stopped in traffic or at the direction of a law enforcement official; 2) a vehicle needing auxiliary power for equipment or for climate control to prevent a safety or health emergency; 3) a vehicle being inspected by a state or federal motor vehicle inspector; 4) an emergency vehicle being used in the course of official business; 5) a commercial vehicle using air conditioning or heating during a driver rest period or while waiting to load or unload; and 6) when the ambient outside air temperature is less than zero degrees Fahrenheit. When the outside ambient air temperature is between zero and 32 degrees Fahrenheit, vehicles may idle for up to 15 minutes during a 60-minute period. In addition, a passenger bus my idle for up to 15 minutes during a 60-minute period while passengers are on board. Any owner of a location that is used for loading and unloading of commercial vehicles may not require that vehicles idle for periods longer than 30 minutes while waiting to load or unload at the location. Violators are subject to fines.

(Reference Maine Revised Statutes Title 38, Section 585-L)

Idle Reduction Weight Exemption

A motor vehicle equipped with a fully functional idle reduction system designed to reduce fuel use and emissions from engine idling may exceed the state maximum weight limitations by up to 550 pounds to compensate for the added weight of the idle reduction technology. The vehicle operator must provide written certification of the weight of the technology and demonstrate the technology is fully functional.

(Reference Washington Administrative Code 468-38-073)

Idle Reduction and Natural Gas Vehicle (NGV) Weight Exemption

Any vehicle or combination of vehicles equipped with idle reduction technology may exceed the state's gross and axle weight limits by up to 400 pounds (lbs.) to compensate for the additional weight of the idle reduction technology. A vehicle primarily powered by natural gas may exceed the state's gross vehicle weight limits by a weight equal to the difference between the average weight of the vehicle with the natural gas tank and fueling system and the average weight of a comparable vehicle with a diesel tank and fueling system. The NGV maximum gross weight may not exceed 82,000 lbs. (Reference New Mexico Statutes 66-7-410)

Idle Reduction Requirement

A vehicle may not idle at a loading zone, parking or service area, route terminal, or other off-street areas, except for the following situations: during adjustment or repair of the engine; during auxiliary equipment operation such as operation of cranes and certain bulk carriers, provided no visible smoke is emitted and the equipment is being used for its intended purpose; during loading and unloading of passengers, not to exceed three minutes; and during engine start-up and cool-down, not to exceed three minutes.

(Reference Hawaii Administrative Rules Title 11, Chapter 60.1-34)

Natural Gas Vehicle and Idle Reduction Weight Exemption

The maximum gross weight for any vehicle fueled primarily by natural gas may exceed the state's gross weight limit by the difference between the weight of the natural gas fueling tank and fueling system and the weight of a comparable diesel fueling tank and fueling system, up to 2,000 pounds per vehicle.

The maximum gross weight limit and axle weight limit for any vehicle or combination of vehicles equipped with idle reduction technology may exceed the state's gross weight limit by up to 550 pounds per vehicle to compensate for the additional weight of the idle reduction technology.

(Reference Nebraska Revised Statutes 60-6,294)

Idle Reduction and Natural Gas Vehicle (NGV) Weight Exemption

A motor vehicle equipped with idle reduction or emissions reduction technology may exceed the maximum gross vehicle weight and axle weight limits by up to 550 pounds (lbs.) to compensate for the additional weight of the technology.

NGVs may exceed the state’s gross vehicle and axle weight limits by the amount of weight calculated as provided under Code of Federal Regulations Title 23, section 127(s), not to exceed 2,000 lbs.

The vehicle operator must be able to provide documentation or demonstrate that the vehicle meets these requirements.

(Reference Minnesota Statutes 169.824)

Idle Reduction Requirement

On-road heavy-duty motor vehicles with a gross vehicle weight rating of greater than 8,500 pounds may not idle for more than three consecutive minutes when the vehicle is stationary. Violators are subject to penalties of up to $500 for each offense. Heavy-duty vehicles subject to this regulation include long-haul and delivery trucks as well as transit and school buses. Emergency fire, rescue, and lifesaving vehicles are exempt. Additional exemptions may also apply.

(Reference Delaware Administrative Code Title 7, Section 1145-5.0)

Idle Reduction Requirement

Vehicle operators may not idle any commercial diesel vehicle with a gross vehicle weight rating of more than 10,000 pounds for more than 10 minutes in any one-hour period. Exemptions apply for the following: traffic conditions; prevention of safety or health emergencies; emergency or law enforcement; maintenance, service, repair, or diagnostic purposes; state or federal inspections; power work-related operations; loading or unloading; sleeper berth temperature control during 1) rest or sleep periods, 2) times when the ambient outside air temperature is less than 40 degrees Fahrenheit or greater than 80 degrees Fahrenheit, or 3) at rest areas, terminals, truck stops, or legal parking locations greater than 500 feet from homes, schools, hospitals, or daycare facilities. Violators are subject to a $75 fine for each offense. A portion of the fine will go towards the Diesel Idling Reduction Fund operated by the South Carolina Department of Health and Environmental Control to develop an idling awareness program.

(Reference South Carolina Code of Laws 56-35-10 to 56-35-80)

Idle Reduction Requirement

Idling of any unattended vehicle is prohibited in Utah. Violators are subject to a penalty of up to $750 and/or up to 90 days imprisonment. Drivers on state roads are also encouraged to avoid excessive idling, which, is defined as more than 10 to 15 seconds for passenger vehicles. Specifically, drivers are encouraged to turn off engines when loading or unloading, delivering, and picking up or dropping off passengers. Drivers of gasoline powered passenger vehicles are encouraged to limit engine warm-up time to 30 seconds and drivers of diesel powered passenger vehicles, buses, and trucks are encouraged to limit engine warm-up to the time the vehicle manufacturer recommends, which is generally less than five minutes. Businesses, schools, airport authorities, and governmental entities are encouraged to post signs to discourage customer idling.

(Reference Utah Code 41-6a-202, 41-6a-1401, 41-6a-1403, 76-3-204, and 76-3-301)

Idle Reduction Requirement

A vehicle may not idle for more than five minutes from April through October in cities and counties where the local government has signed a Memorandum of Agreement with the Texas Commission on Environmental Quality (TCEQ). Exemptions apply for the following: vehicles with a gross vehicle weight rating (GVWR) of 14,000 pounds (lbs.) or less; emergency or law enforcement vehicles; airport ground support vehicles; rented/leased vehicles; to perform needed work, including roadway construction, maintenance and diagnostics; to defrost a windshield; traffic conditions; and hours of service compliance activities. Vehicles may idle for up to 30 minutes for bus passenger comfort or transit operations. Fines vary by jurisdiction.

TCEQ may not prohibit or limit the idling of any vehicle with a GVWR greater than 8,500 lbs. provided that the vehicle is equipped with a 2008 or subsequent model year heavy-duty diesel or natural gas engine that is certified by the U.S. Environmental Protection Agency or another state agency to emit no more than 30 grams of nitrogen oxides per hour when idling.

(Reference Texas Statutes, Health and Safety Code 382.0191; and Texas Administrative Code 30.114.510-30.114.517)

Idle Reduction and Natural Gas Vehicle (NGV) Weight Exemption

Any vehicle or combination of vehicles equipped with fully functional idle reduction technology may exceed the state’s gross and axle weight limits by up to 550 pounds (lbs.) to compensate for the additional weight of the idle reduction technology. To qualify, the vehicle operator must be able to prove the weight of the idle reduction technology with written certification and demonstrate that the idle reduction technology is fully functional at all times.

NGVs may exceed the weight limits by an amount equal to the difference of the weight of the natural gas tank and fueling system and the weight of a comparable diesel tank and fueling system or by up to 2,000 lbs., whichever is less.

(Reference Wisconsin Statutes 348.15(3)(f) and 348.15(3)(h))

Idle Reduction Requirement

Diesel vehicles with a gross vehicle weight rating over 10,000 pounds may not idle for more than five minutes in any continuous 60-minute period. Exemptions include: uncontrollable traffic conditions; prevention of safety or health emergencies; emergency or law enforcement purposes; verification that a vehicle is safe to operate; vehicle maintenance; power work-related operations; sampling, weighing, or loading; bus passenger comfort; vehicles actively engaged in solid waste or recyclable material collection; vehicles complying with manufacturer specifications; and vehicles meeting California Air Resources Board oxides of nitrogen idling emission standards.

(Reference Title 35 Pennsylvania Statutes, Chapter 23B, Section 4603)

Idle Reduction and Alternative Fuel Vehicle Weight Exemption

Any motor vehicle equipped with an auxiliary power unit or other idle reduction technology may exceed the gross, single axle, tandem axle, or bridge formula weight limits by up to 550 pounds (lbs.) to compensate for the added weight of the idle reduction technology. Furthermore, any natural gas or electric vehicle may exceed the limits by up to 2,000 lbs. To be eligible for the weight exemption, certification of the weight of the auxiliary power unit or proof that the vehicle operates on natural gas, and a demonstration that the vehicle is fully functional must be available to law enforcement officials.

(Reference Virginia Code 46.2-1129.1 through 46.2-1129.2)

Fuel-Efficient Green Fleets Policy and Fleet Management Program Development

The Alabama Legislature established a Green Fleets Review Committee (Committee) and Green Fleets Policy (Policy) outlining a procurement procedure for state vehicles based on criteria that includes fuel economy and life cycle costing. State fleet managers must classify their vehicle inventory for compliance with the Policy and submit annual plans for procuring fuel-efficient vehicles. These plans must reflect a 4% annual increase in average fleet fuel economy for light-duty vehicles, a 3% annual increase in average fleet fuel economy for medium-duty vehicles, and a 2% annual increase in average fleet fuel economy for heavy-duty vehicles per fiscal year. Government entities must manage and operate their fleets in a manner that is energy efficient, minimizes emissions, and reduces petroleum dependency by using specified proven technology the Committee identifies.

(Reference Code of Alabama 41-17A-1 through 41-17A-6)

Idle Reduction and Alternative Fuel Vehicle Weight Exemption

A heavy-duty vehicle that is equipped with qualified idle reduction technology may exceed the state’s gross, total axle, or bridge formula vehicle weight limits by up to 550 pounds (lbs.) to accommodate the weight of the idle reduction technology. To qualify for the exemption, the vehicle operator must also be able to prove the weight of the idle reduction technology and demonstrate that the technology is fully functional. Any vehicles fueled by natural gas, electricity, or hydrogen may exceed the limits by up to 2,000 lbs.

(Reference Arizona Revised Statutes 28-1100)

Idle Reduction Weight Exemption

A commercial vehicle equipped with idle reduction technology may exceed the state's gross, total axle, total tandem, or bridge formula vehicle weight limits by up to 550 pounds to compensate for the additional weight of the idle reduction technology. The additional weight may not exceed the actual weight of the idle reduction unit. (Reference Connecticut General Statutes 14-267c)

Idle Reduction Weight Exemption

Any motor vehicle equipped with qualified idle reduction technology may exceed the state gross, axle, tandem, or bridge weight limits by up to 400 pounds to account for the weight of the technology. The additional weight may not exceed the actual weight of the idle reduction unit. To qualify for the exemption, the vehicle operator must also be able to prove the weight of the idle reduction technology and demonstrate that the technology is fully functional.

(Reference Delaware Code Title 21, Chapter 45, Section 4503f)

Idle Reduction Weight Exemption

An individual that produces biodiesel for personal use or use by a member of their immediate family is exempt from the state fuel excise tax.

(Reference Maine Revised Statutes Title 29-A, Section 2360)

Idle Reduction, Natural Gas Vehicle (NGV), and Electric Vehicle (EV) Weight Exemption

A vehicle equipped with qualified idle reduction technology may exceed the state’s gross and axle weight limits by up to 400 pounds (lbs.) to compensate for the additional weight of the idle reduction technology. A vehicle primarily powered by natural gas or electricity may exceed the state’s gross vehicle weight limits by a weight equal to the difference between the weight of the vehicle with the natural gas tank and fueling system, or EV battery, and the weight of a comparable vehicle with a diesel tank and fueling system. Any NGV and EV may exceed the limits by up to 2,000 lbs.

(Reference Title 35 Pennsylvania Statutes, Chapter 23B, Section 4604 and Title 75 Pennsylvania Statutes, Part IV, Chapter 49, Subchapter C, Section 4941)

Idle Reduction Weight Exemption

Any motor vehicle equipped with qualified idle reduction technology may exceed the state gross and axle weight limits by up to 550 pounds, as provided under Title 23 U.S. Code, section 127(a)(12), to compensate for the added weight of the idle reduction technology.

(Reference West Virginia Code 17C-13A-4)

Idle Reduction Requirement

A commercial motor vehicle with a gross vehicle weight rating of more than 10,000 pounds may not idle for more than 15 minutes in any 60-minute period. Exceptions apply, including those pertaining to emergency vehicles, auxiliary power unit use, and outside temperature. Additionally, exemptions apply to diesel vehicles with a label issued by the California Air Resources Board and diesel vehicles powered by clean diesel technology or biodiesel.

(Reference West Virginia Code 17C-13A-1 through 17C-13A-3)

Idle Reduction and Natural Gas Vehicle (NGV) Weight Exemption

Any motor vehicle equipped with an auxiliary power unit (APU) or other idle reduction technology may exceed the gross, axle, tandem, or bridge formula weight limits by up to 400 pounds (lbs.). To be eligible for the weight exemption, the vehicle operator must be able to provide written proof or certification of the weight of the APU and demonstrate or certify that the idle reduction technology is fully functional at all times. Any NGV may exceed the limits by up to 2,000 lbs.

(Reference Code of Alabama 32-9-20)

Idle Reduction and Natural Gas Vehicle (NGV) Weight Exemption

Any motor vehicle equipped with idle reduction technology may exceed the gross vehicle or internal bridge weight by the amount equal to the certified weight of the idle reduction technology, up to 550 pounds (lbs.). To be eligible, the operator must present written verification of the weight of the idle reduction technology and demonstrate that it is fully functional at all times. Any NGV may exceed the limits by up to 2,000 lbs. (Reference Florida Statutes 316.545)

School District Emissions Reduction Policies

School districts must develop and implement a policy to minimize or eliminate emissions from school buses, cars, delivery vehicles, maintenance vehicles, and other motor vehicles used on school property. Policies must consider existing anti-idling and clean air zone regulations established by the New Hampshire Department of Environmental Services established.

(Reference New Hampshire Revised Statutes 200:48)

Idle Reduction and Natural Gas Vehicle (NGV) Weight Exemption

Any motor vehicle equipped with qualified idle reduction technology may exceed the state's vehicle weight limits by up to 400 pounds (lbs.) to compensate for the additional weight of the idle reduction technology. The vehicle's operator must maintain written certification of the device's weight and proof that it is fully functional and must provide this proof to a law enforcement officer upon request. Any NGV may exceed the limits by up to 2,000 lbs. (Reference New York Vehicle and Traffic Law 385)

School Bus Retrofit Reimbursement

The Illinois Department of Education will reimburse any qualifying school district for the cost of converting gasoline buses to more fuel-efficient engines or to engines using alternative fuels. Restrictions may apply.

(Reference 105 Illinois Compiled Statutes 5/29-5)

Idle Reduction Weight Exemption

Any motor vehicle equipped with idle reduction technology may exceed the state gross, axle, and tandem weight limits by up to 550 pounds to account for the weight of the technology. To be eligible for the weight exemption, the vehicle operator must be able to present written certification of the weight of the idle reduction technology and demonstrate or certify that the technology is fully functional at all times.

(Reference Georgia Code 32-6-27)

State Agency Sustainability Plan and Requirements

Each state department or agency must prepare an annual sustainability plan that includes ways to modify vehicle use practices and report annually on progress towards implementing their plan. Each state agency plan must be based on following targets and mandates: - When reasonably possible, state agencies must purchase on-road vehicles that use alternative fuels, including biodiesel blends of 20% (B20) or greater, compressed or liquefied natural gas, ethanol blends of 70% (E70) or greater, hydrogen, propane, or electricity, or (with the exception of buses, snowplows, and construction vehicles) have a fuel economy rating that exceeds 30 miles per gallon (mpg) in the city and 35 mpg on the highway; - When reasonably possible, state employees must fuel vehicles capable of operating on an alternative fuel with that fuel; - State agencies must increase the use of renewable fuels derived from agricultural products or waste products; and - State agencies must increase the use of technology for delivering information and services in order to reduce reliance on the state’s fleet.

(Reference Minnesota Statutes 16C.135 and 16C.137)

Idle Reduction Weight Exemption

Any motor vehicle equipped with qualifying idle reduction technology may exceed the state's gross vehicle weight limits by up to 400 pounds to compensate for the additional weight of the idle reduction technology. To be eligible for the weight exemption, the vehicle operator must be able to provide proof that the idle reduction technology is fully functional. (Reference Texas Statutes, Transportation Code 622.955)

Emissions Control Requirement

Heavy-duty diesel vehicles used to perform federally funded state public works contracts must be powered by engines with Level 3 emissions control devices that are properly operated and maintained. If the Rhode Island Department of Environmental Management determines that no verified Level 3 devices are appropriate on particular engines, Level 2 devices are required. Likewise, if no verified Level 2 devices are appropriate, Level 1 devices are required. Exceptions to this requirement include, but are not limited to, snow removal vehicles and equipment, farm equipment, emergency response vehicles, standby generators, and vehicles used on a project for less than 30 total work days over the life of the project.

(Reference Rhode Island General Laws 31-47.3-5)

Commercial Vehicle Idle Reduction Requirement

A driver of a commercial vehicle may not idle the engine for more than five minutes in any sixty-minute period, unless the vehicle is using an auxiliary power unit, generator set, cargo temperature control unit, or other idle reduction technology that maintains heat or air conditioning or provides electrical power. Exceptions apply in certain situations and for certain vehicles. (Reference Oregon Revised Statutes 825.605 and 825.610)

Idle Reduction Weight Exemption

Any heavy-duty vehicle equipped with an auxiliary power unit or other qualified idle reduction technology may exceed the state gross, axle, tandem, or bridge formula weight limits by up to 550 pounds. To qualify for this exemption, drivers must be able to provide proof of the idle reduction technology’s weight through written certification. Drivers must also be able to prove through demonstration or certification that the idle reduction technology is fully functional at all times.

(Reference New Hampshire Revised Statutes 266:18-c)

Idle Reduction Weight Exemption

A vehicle equipped with idle reduction technology may exceed the state’s gross, axle, and bridge vehicle weight limits by up to 550 pounds to compensate for the additional weight of the idle reduction technology. The additional weight may not exceed the actual weight of the idle reduction unit. The vehicle operator must carry written certification showing the weight of the technology and must be able to demonstrate or certify that the unit is fully functional.

(Reference 625 Illinois Compiled Statutes 5/15-112)

Local Vehicle Idling Regulations

A local highway authority may not enact an ordinance that prohibits or restricts an owner or operator of a vehicle from idling the vehicle’s engine, unless the ordinance is primarily educational, specifies that a person must be issued at least three warnings before a fine is imposed, has the same fine structure as a parking violation, provides for the safety of law enforcement personnel enforcing the ordinance, and specifies that the ordinance may be enforced on public property or private property that is open to the general public. Exceptions apply.

(Reference Utah Code 41-6a-208)

Idle Reduction Requirement

A driver may not idle a vehicle on a roadway outside a business or residential district when it is practical to stop and park the vehicle.

(Reference House BIll 0239, 2023)

Idle Reduction Technology Weight Exemption

States may allow heavy-duty vehicles equipped with idle reduction technology to exceed the maximum gross vehicle weight limit and the axle weight limit by up to 550 pounds to compensate for the additional weight of the idle reduction technology. This allowance does not impact state highway funding eligibility. (Reference Public Law 112-141 and 23 U.S. Code 127(a)(12))

School Bus Idle Reduction Requirement

The Mississippi State Department of Education requires public school district bus operators to minimize school bus idling to reduce exposure to diesel exhaust.

(Reference Mississippi Code 37-11-71)

Diesel Vehicle Retrofit and Improvement Grants

The Indiana Department of Environmental Management (IDEM) administers the DieselWise Indiana grant programs to support projects that reduce diesel emissions. DieselWise provides grants ranging from $50,000 to $1,000,000 for projects throughout the state. Eligible applicants include private and public entities that operate diesel powered equipment. Eligible projects include replacing or converting a diesel vehicle or vehicle component with one that operates on alternative fuel, as well as installing exhaust retrofit technologies, idle reduction technologies, aerodynamic technologies, and low rolling resistance tires. For more information see the IDEM DieselWise website.

Vehicle Idling Policy Requirements

Schools must adopt and enforce a written policy to address idling vehicles on school grounds. This policy must be modeled after the Indiana State Department of Health's manual of best practices for managing indoor air quality in schools and must be available for review. (Reference 410 Indiana Administrative Code 33-4-3)

Idle Reduction and Natural Gas Vehicle (NGV) Weight Exemption

Any motor vehicle equipped with an auxiliary power unit or other idle reduction technology may exceed the gross, single axle, tandem axle, or bridge formula weight limits by up to 400 pounds (lbs.) to compensate for the added weight of the idle reduction technology. Any NGV may exceed the limits by up to 2,000 lbs. (Reference Indiana Code 9-20-4-1)

Alternative Fuel and Special Fuel Definitions

The definition of alternative fuel includes propane. Special fuel is defined as all combustible gases and liquids that are suitable for powering an internal combustion engine or motor or are used exclusively for heating, industrial, or farm purposes. Special fuels include biodiesel, blended biodiesel, and natural gas products, including liquefied and compressed natural gas. (Reference Indiana Code 6-6-2.5-1 and 6-6-2.5-22)

Idle Reduction Requirement

A driver may not idle a motor vehicle for more than five minutes in a 60-minute period. This limit does not apply if the vehicle is operating an auxiliary power unit, generator set, or other mobile idle reduction technology. Additional exemptions apply. Additionally, all driver education courses must include instruction on the adverse environmental, health, economic, and other impacts of unnecessary idling and on the law governing idling of motor vehicles.

(Reference Vermont Statutes Title 23, Chapter 28, Section 1110 and Title 16, Chapter 29, Section 1045)

State Energy Strategy Development

The New Hampshire Office of Energy Planning (Office), in consultation with the New Hampshire Energy Advisory Council, prepared a 10-year energy strategy for the state that addresses the impact of transportation policies and programs on electricity energy needs in the state in 2018. Strategy recommendations include enabling and encouraging adoption of electric vehicles and reducing unnecessary idling. The Office will review and update the strategy triennially. For more information, including the strategy, visit the Strategy Revision website.

(Reference New Hampshire Revised Statutes 4:E1)

School Bus Idle Reduction Policy

School bus drivers or drivers of other vehicles that the school district owns, leases, or contracts must turn off the vehicle engine while loading or unloading passengers on school grounds or near a school. Exceptions include idling for mechanical work, to maintain a comfortable temperature in the vehicle, or in emergency evacuations where it is necessary to operate wheelchair lifts. Drivers should also instruct pupils on the necessity to load and unload promptly, park their vehicles diagonally to minimize exhaust from entering another bus or the school, and turn off their vehicle during sporting or other events. School districts must provide personnel with a notice outlining these provisions no later than five days after the start of the school year. For more information, see the New York State Education Department website.

(Reference New York Education Law 3637)

Idle Reduction Weight Exemption

A commercial vehicle equipped with qualified idle reduction technology may exceed the state’s gross, total axle, or bridge formula vehicle weight limits by up to 550 pounds to compensate for the additional weight of the idle reduction technology. Upon request, vehicle operators must be able to provide written proof of idle reduction technology weight and demonstrate or certify that that the idle reduction technology is fully functional at all times.

(Reference Alaska Administrative Code 17.25.013 and Attorney General File JU2017200674)

Idle Reduction Weight Exemption

Any motor vehicle equipped with a qualified auxiliary power unit or idle reduction technology may exceed the state’s gross, total axle, or bridge formula vehicle weight limits by up to 550 pounds to compensate for the additional weight of the idle reduction technology. To be eligible for the weight exemption, the vehicle operator must be able to provide written proof of idle reduction technology weight and demonstrate or certify that it is fully functional at all times.

(Reference 8 Code of Colorado Regulations 1507-28)

State Agency Coordination to Address Climate Change

The Rhode Island Executive Climate Change Coordinating Council (EC4) was established to coordinate efforts between state agencies to reduce greenhouse gas (GHG) emissions. The EC4 will pursue GHG emissions reductions of 10% below 1990 levels by 2020, 45% below 1990 levels by 2035, and 80% below 1990 levels by 2050. State agencies must assist EC4 to develop programs to encourage state employees to reduce vehicle miles traveled and use public transportation when available. The Council will also work with municipalities to encourage sustainability; identify federal, state, and private funding opportunities that can be leveraged to reduce emissions in Rhode Island; and develop GHG emissions reduction strategies. The Council submitted a plan in December 2016 with suggested strategies for GHG emissions reduction activities to the governor. The EC4 and the State Chief Resiliency Officer submitted a statewide Action Plan to Stand Up to Climate Change and to the governor in July 2018.

(Reference Rhode Island General Laws 42-6.2 and Executive Order(PDF) 17-10, 2017)

Alternative Fuel and Idle Reduction Revolving Loan Program for Public Entities

The Alabama Department of Economic and Community Affairs (ADECA) offers low-interest energy efficiency loans through its Local Government Energy Loan program to local governments and educational institutions. Eligible energy efficiency improvement projects include those involving idle reduction equipment and natural gas and propane vehicle conversions or purchases. Dedicated and bi-fuel vehicles are eligible. Loans may cover both incremental and conversion costs. Local governments and public colleges and universities may borrow up to $350,000, and K-12 public schools may borrow up to $350,000 per campus or $500,000 per school system. The minimum loan amount is $50,000 and the maximum loan term is five years. For more information, including application availability, see the ADECA’s Energy Division website.

Idle Reduction Weight Exemption

Any motor vehicle equipped with qualified idle reduction technology may exceed the state gross, axle, tandem, or bridge weight limits by up to 400 pounds to account for the weight of the technology. The idle reduction technology must be able to provide electrical service, heating, or cooling to the vehicle. The additional weight may not exceed the actual weight of the idle reduction unit. The vehicle operator must also be able to prove the weight of the idle reduction technology and demonstrate that the technology is fully functional.

(Reference Massachusetts General Laws Chapter 90, Section 19A)

Idle Reduction Weight Exemption

Any motor vehicle equipped with a qualified auxiliary power unit (APU) or idle reduction technology may exceed the state gross, axle, tandem, or bridge weight limits by up to 550 pounds to account for the weight of the technology. The additional weight may not exceed the actual weight of the idle reduction unit. The vehicle operator must be able to provide written certification of the weight of the APU or idle reduction technology and demonstrate that the technology is fully functional.

(Reference Maryland Statutes, Transportation Code 24-109)

Idle Reduction Weight Exemption

Any motor vehicle equipped with qualified idle reduction technology or other emissions reduction technology may exceed the state gross or axle weight limits, by 550 pounds or the maximum amount allowed by federal law, whichever is greater, to account for the weight of the technology. The additional weight may not exceed the weight of the idle reduction unit. The vehicle operator must also be able to demonstrate that the technology is fully functional.

(Reference Tennessee Code 55-7-203)

Diesel Emissions Reduction Grants

The New Hampshire Department of Environmental Services (NHDES) provides U.S. Environmental Protection Agency Diesel Emissions Reduction Act (DERA) funding for projects that reduce diesel emissions in New Hampshire. Funding for up to 100% of eligible project costs is available for businesses, individuals, and local or state agencies that reduce diesel emissions by converting engines to alternative fuels, retrofitting exhaust controls, purchasing new vehicles, or adding idle reduction equipment. Eligible alternative fuels include propane, compressed natural gas, and electricity. Grants will be awarded on a competitive basis, with equity and environmental justice considerations as part of the evaluation criteria. For more information, including funding amounts and how to apply, see the NHDES New Hampshire DERA Project website.

Natural Gas Vehicle and Idle Reduction Weight Exemption

A vehicle powered in whole or part by natural gas, electricity, or hydrogen may exceed the state’s gross and axle weight limits by up to 2,000 pounds (lbs.), equal to the difference between the weight of the vehicle with the natural gas tank, battery, or hydrogen fueling system and the weight of a comparable diesel tank and fueling system. The exemption is allowed on all state roads and interstate highways, as defined in Title 23 of the Code of Federal Regulations section 127(s).

Any vehicle equipped with idle reduction technology may exceed the state’s gross vehicle weight limits by up to 400 lbs. to compensate for the additional weight of the idle reduction technology. The additional weight may not exceed the actual certified weight of the idle reduction unit. Upon request, vehicle operators must provide proof or certification of the weight of the idle reduction technology and proof that the idle reduction technology is fully functional.

(Reference House Bill 3054, 2022, Oklahoma Statutes 47-14-109, and Oklahoma Statutes 47-14-109.3)

Idle Reduction Effort Support

The California Legislature urges motorists to not idle their vehicles in spaces where children congregate, such as schools and parks.

(Reference Assembly Concurrent Resolution 160, 2016)

Idle Reduction and Natural Gas Vehicle (NGV) Weight Exemption

Any motor vehicle equipped with an auxiliary power unit (APU) or other idle reduction technology may exceed the gross, single axle, tandem axle, or bridge formula weight limits by up to 550 pounds (lbs.) to compensate for the weight of the technology. To be eligible for the weight exemption, the vehicle operator must be able to provide written proof or certification of the weight of the APU or idle reduction technology and demonstrate or certify that the technology is functional at all times.

NGVs may exceed the weight limits by an amount equal to the difference of the weight of the natural gas tank and fueling system and the weight of a comparable diesel tank and fueling system. The NGV must not exceed a maximum gross vehicle weight of 82,000 lbs. (Reference Iowa Code 321.463)

Natural Gas Vehicle (NGV) and Idle Reduction Weight Exemption

Any vehicle equipped with qualified idle reduction technology may exceed the state’s gross and axle weight limits by up to 550 pounds to compensate for the additional weight of the idle reduction technology. The vehicle operator must be able to provide proof of the weight of the idle reduction technology and that it is fully functional at all times.

A vehicle primarily powered by natural gas may exceed the state’s gross vehicle weight limits by a weight equal to the difference between the weight of the vehicle with the natural gas tank and fueling system and the weight of a comparable vehicle with a diesel tank and fueling system. The NGV maximum gross weight may not exceed 82,000 pounds.

(Reference Missouri Revised Statutes 304.180)

Idle Reduction and Natural Gas Vehicle (NGV) Weight Exemptions

Any motor vehicle or combination of vehicles equipped with idle reduction technology is allowed to exceed the maximum gross vehicle and axle weight limits by up to 550 (lbs) to compensate for the added weight of the idle reduction technology. The vehicle operator must provide documentation that the vehicle is equipped with fully functional idle reduction technology.

A vehicle powered primarily by natural gas may exceed the state’s gross, single axle, tandem axle, or bridge formula weight limits by an amount equal to the difference of the weight of the natural gas tank and fueling system and the weight of a comparable diesel tank and fueling system, up to 2,000 lbs. Upon request, the vehicle operator must provide documentation that verifies the weight of the natural gas fueling system.

(Reference South Carolina Code of Laws 56-5-4160(M) and South Carolina Code of Laws 56-5-4160(L)))

Heavy-Duty Vehicle Emissions Reduction Grants

Through the Vermont Diesel Emissions Reduction Grants Program, the Vermont Department of Environmental Conservation (DEC) provides funding to local, state and regional agencies or departments, businesses, institutions, and nonprofit organizations for projects focused on reducing emissions from diesel engines and vehicles. Qualifying heavy-duty vehicles include buses and Class 5-8 trucks. Projects eligible for funding are as follows:

• Verified emission control technologies;
• Verified idle reduction technologies;
• Verified aerodynamic technologies and low rolling resistance tires;
• Certified engine replacements;
• Alternative fuel conversions; and
• Certified vehicle or equipment replacements.

All technologies and engines must be certified by the U.S. Environmental Protection Agency. Alternative fuels include, but are not limited to, natural gas, propane, and electricity. Cost share requirements vary by project. For more information, including application details, see the DEC Vermont Diesel Emissions Reduction Grants website.

Alternative Fuel Vehicle (AFV) and Infrastructure Grants for Public Fleets

Under the Creating Long-term Energy Alternatives Now by Advancing Improvements Regionally (CLEAN AIR) Grants program, the Association of Central Oklahoma Governments (ACOG) issues grants for alternative fuel and advanced technology vehicle projects in the Oklahoma City Area Regional Transportation Study (OCARTS) area. Projects must provide a reduction in vehicle equipment emissions and cannot increase the number of vehicles in applicant fleets. Eligible projects may also include AFV fueling station or charging infrastructure. Eligible applicants include OCARTS-member governments, certain public trusts and public authorities providing essential services to OCARTS-member governments, member entity public transit fleets, and public school fleets whose district boundaries are contained partially or wholly within the OCARTS area. For more information, including open solicitations, see the ACOG CLEAN AIR Grants for Public Fleets website.

Idle Reduction Technology, Natural Gas Vehicle, and Plug-in Electric Vehicle Weight Exemption

Any motor vehicle equipped with an auxiliary power unit or other qualified idle reduction technology may exceed the maximum gross vehicle weight limit by up to 550 pounds (lbs.) to compensate for the additional weight of the idle reduction technology. Natural gas vehicles and plug-in electric vehicles may exceed the maximum gross vehicle weight limit for comparable conventional fuel vehicles by up to 2,000 lbs. (Reference Nevada Revised Statutes 484D.635)

Clean Diesel Grant Program

The Wisconsin Department of Natural Resources (DNR) provides U.S. Environmental Protection Agency Diesel Emission Reduction Act (DERA) funding for projects that reduce diesel emissions in Wisconsin. Funding for 25% to 100% of eligible projects costs is available to businesses, nonprofits, and public entities that reduce diesel emissions by replacing engines, retrofitting exhaust controls, purchasing new vehicles, or installing idle reduction equipment. Eligible projects include school buses, transit buses, and non-road engines, equipment, or vehicles. For more information, including funding amounts and application details, see the DNR Clean Diesel Grant Program website.

Volkswagen (VW) Settlement Allocation

The South Dakota Department of Environment and Natural Resources may use funds awarded to South Dakota through the VW Environmental Mitigation Trust to issue grants for the reduction of nitrogen oxide air emissions from mobile sources in the state. The funds are deposited into a Clean Air Act Settlement fund.

(Reference 34A-1-63 and 34A-1-64)

Off-Road Diesel Replacement Grants

The Minnesota Pollution Control Agency (MPCA) provides funding to public, private, and nonprofit fleet owners for the replacement of eligible off-road diesel equipment. Eligible equipment includes trailer refrigeration units, terminal tractors/drayage trucks, and more. This program is partially funded by Minnesota’s portion of the Volkswagen Environmental Mitigation Trust. For more information, including funding availability, see the MPCA Diesel Emission Reduction Act website.

Diesel Emissions Reductions Grants

The Massachusetts Department of Environmental Protection (MassDEP) provides U.S. Environmental Protection Agency Diesel Emissions Reduction Act (DERA) funding for projects that reduce diesel emissions in Massachusetts. Funding for eligible project costs is available for local or state agencies and public colleges and universities that reduce diesel emissions by converting engines to alternative fuels, retrofitting exhaust controls, purchasing new vehicles, or adding idle reduction equipment. MassDEP prioritizes projects that benefit environmental justice communities. Additional terms and conditions apply. For more information, including funding amounts and how to apply, see the MassDEP Apply for a DERA Open Solicitation Grant website.

Idle Reduction Weight Exemption

Any motor vehicle equipped with qualified idle reduction technology may exceed the state gross, axle, tandem, or bridge weight limits by up to 550 pounds to account for the weight of the technology. The additional weight may not exceed the actual weight of the idle reduction unit. To qualify for the exemption, the vehicle operator must also be able to prove the weight of the idle reduction technology and demonstrate that the technology is fully functional. For more information, see the North Dakota Highway Patrol Legal Vehicle Size and Weight Guide.

(Reference North Dakota Century Code 39-12-01)

Truck Emissions Reduction Study and Grant at Port Facilities

The U.S. Department of Transportation (DOT), in consultation with the U.S. Department of Energy and U.S. Environmental Protection Agency, must establish a program to reduce idling at port and intermodal port facilities. Under this program, the Secretary must study how ports and intermodal port transfer facilities would benefit from emissions reductions opportunities, including port operations electrification, and study emerging technologies and strategies to reduce idling truck emissions.

DOT must then coordinate and provide grant funding to test, evaluate, and deploy projects to reduce idling truck emissions, including port electrification and efficiency improvements particularly from heavy-duty vehicles. Grant funding will be available for up to 80% of eligible project cost. Awards will be treated as Federal-aid Highway Program projects. Additional funding eligibility and considerations will apply.

DOT must submit a report detailing the status and effectiveness of the program, recommendations for workforce development and training opportunities with respect to port electrification, and policy recommendations, no later than one year after all funded projects are complete.

(Reference Public Law 117-58 and 23 U.S. Code 1)

Low-Emission Technology Grants

The North Dakota Industrial Commission (NDIC) administers the Clean Sustainable Energy Authority (CSEA) which provides grants to enhance the production of low-emission technology projects that increase economic benefits, create jobs, minimize waste, increase efficiency or reliability, or maximize the market potential for sustainable energy technology in North Dakota. CSEA may award up to $25 million between July 1, 2021, and June 30, 2023. Eligible applicants include corporations, cooperatives, associations, and others. For more information, including application materials and additional eligibility requirements, see the NDIC CSEA website and the CSEA Program Guidelines.

(Reference North Dakota Century Code 54-63.1, 17-01, and 17-07)

Fleet Alternative Fuel Vehicle Incentive Authorization

The Colorado Department of Public Health and Environment (CDPHE) is authorized to issue grants, loans, and rebates through the Clean Fleet Enterprise (Enterprise), a government-owned business, to business and government entities for the replacement of light-, medium-, and heavy-duty fleet vehicles with clean vehicles. Eligible projects include electric, hydrogen, and renewable natural gas vehicles as well as idle reduction technology. The Enterprise may impose fees to raise funds for financing programs. For more information, see the CDPHE Enterprise website.

(Reference Colorado Revised Statutes 25-7.5-103)

Diesel Emissions Reduction Grants

The South Carolina Department of Health and Environmental Control (SCDHEC) provides U.S. Environmental Protection Agency Diesel Emission Reduction Act (DERA) funding for projects that reduce diesel emissions in South Carolina. Funding for eligible project costs is available to universities, private organizations, businesses, and local government entities that reduce diesel emissions by retrofitting engines, installing idle reduction technologies, or replacing vehicles and equipment. Additional terms and conditions apply. For more information, including funding amounts and how to apply, see the SCDHEC DERA Grants website.

Diesel Emissions Reductions Grants

The Connecticut Department of Energy and Environmental Protection (DEEP) provides U.S. Environmental Protection Agency Diesel Emissions Reduction Act (DERA) funding for projects that reduce diesel emissions in Connecticut. Funding for eligible project costs is available for government agencies organizations, and businesses that reduce diesel emissions by converting engines to alternative fuels, retrofitting exhaust controls, purchasing new vehicles, or adding idle reduction equipment. DEEP prioritizes projects that benefit environmental justice communities. Additional terms and conditions apply. For more information, including funding amounts and how to apply, see the DEEP DERA Grants website.

Diesel Emissions Reduction Grants

The Arkansas Division of Environmental Quality (DEQ) provides U.S. Environmental Protection Agency Diesel Emissions Reduction Act funding for projects that reduce emissions from medium- and heavy-duty vehicles. Funding is available for projects that reduce diesel emissions by employing exhaust controls, engine upgrades, idling reduction technologies, engine replacements, or vehicle and equipment replacements. Additional terms and conditions apply. For more information, including how to apply, see the DEQ What is Go RED webpage.