Idle Reduction Laws and Incentives in Indiana

The list below contains summaries of all Indiana laws and incentives related to idle reduction.

Laws and Regulations

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)

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)

State Incentives

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 $250,000 for diesel vehicle, equipment, and engine retrofits or replacements and idle reduction technologies. Eligible applicants include private and public entities. For more information see the IDEM DieselWise website.

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)

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