Search Federal and State Laws and Incentives

High Occupancy Vehicle (HOV) and High Occupancy Toll (HOT) Lane Exemption

Compressed natural gas, hydrogen, electric, and plug-in hybrid electric vehicles meeting specified California and federal emissions standards and affixed with a California Department of Motor Vehicles (DMV) Clean Air Vehicle sticker may use HOV lanes regardless of the number of occupants in the vehicle. Purple stickers expire January 1, 2023; orange stickers expire January 1, 2024; blue stickers expire January 1, 2025; and yellow stickers expire September 30, 2025.

Residents with an annual income at or below 80% of California’s median income level may participate in the Income-Based CAV (IB-CAV) Decal Program, which allows used vehicles with previously issued CAV decals to retain eligibility for a CAV decal. IB-CAV decals are valid through January 1, 2024. Additional requirements apply.

The California Department of Transportation must publish a report by June 1, 2023, detailing the number of stickers issued under this program. Vehicles originally issued white, green, or red decals are no longer eligible to participate in this program. Vehicles with stickers are also eligible for reduced rates on or exemptions from toll charges imposed on HOT lanes. For more information and restrictions, including a list of qualifying vehicles and additional eligibility requirements, see the California Air Resources Board Carpool Stickers website.

(Reference California Vehicle Code 5205.5 and 21655.9)

Compressed Natural Gas (CNG) and Electricity Tax Exemption for Transit Use

CNG and electricity that local agencies or public transit operators use as motor vehicle fuel to operate public transit services is exempt from applicable user taxes a county imposes.

(Reference California Revenue and Taxation Code 7284.3)

Advanced Transportation Tax Exclusion

The California Alternative Energy and Advanced Transportation Financing Authority (CAEATFA) provides a sales and use tax exclusion for qualified manufacturers of advanced transportation products, components, or systems that reduce pollution and energy use and promote economic development. Incentives are available until December 31, 2025. For more information, including application materials, see the CAEATFA Sales and Use Tax Exclusion Program website.

(Reference California Public Resources Code 26000-26017)

Zero Emission Vehicle (ZEV) and Near-ZEV Weight Exemption

ZEVs and near-ZEVs may exceed the state’s gross vehicle weight limits by an amount equal to the difference of the weight of the near-zero emission or zero emission powertrain and the weight of a comparable diesel tank and fueling system, up to 2,000 pounds. A ZEV is defined as a vehicle that produces no criteria pollutant, toxic air contaminant, or greenhouse gas emissions when stationary or operating. A near-ZEV is a vehicle that uses zero emission technologies, uses technologies that provide a pathway to zero emission operations, or incorporates other technologies that significantly reduce vehicle emissions.

(Reference California Business and Professions Code 12725 and California Vehicle Code 35551)

Zero Emission Transit Bus Tax Exemption

Zero-emission transit buses are exempt from state sales and use taxes when sold to public agencies eligible for the Low Emission Truck and Bus Purchase Vouchers. This exemption expires January 1, 2024.

(Reference California Revenue and Taxation Code 6377)