Metro ExpressLanes Home (link to home)

Metro ExpressLanes is making changes to its Clean Air Vehicle Policy:


Starting March 1, 2019:

  • Customers with a clean air vehicle (CAV) displaying a valid DMV-issued red or purple CAV decal with a copy of the vehicle's official California DMV vehicle registration provided to Metro ExpressLanes, are eligible for a 15% discount off of the posted rate on the I-10 and I-110 Metro ExpressLanes.
  • Other CAV vehicles (including those with yellow, green or white CAV decals) will not be eligible to receive any CAV discounts.
  • All clean air vehicles must set the switch on their FasTrak transponder to indicate the actual number of people in the vehicle for a given trip. CAVs are no longer allowed to use the 2 or 3+ transponder switch settings unless that many persons are present in the vehicle. Any CAVs incorrectly using the 2 or 3+ switch setting without that many occupants in the vehicle will be subject to CHP citation.

Clean Air Vehicles (CAV) and Decals

Vehicles that meet specified emissions standards may be issued CAV decals that allow the vehicle to be operated by a single occupant in the High Occupancy Vehicles (HOV or carpool) lanes. See California Vehicle Code (CVC) §§5205.5 and 21655.9.
Access OK Clean Air Vehicles Decal (Red)Access OK Clean Air Vehicles Decal (Purple)

The Department of Motor Vehicles will be issuing red and purple decals for qualifying vehicles pursuant to CVC §§5205.5 and 21655.9. The red decal is valid until January 1, 2022. The purple decal is valid until January 1, 2023. These decals are issued to vehicles that meet California's super ultra-low emission vehicle (SULEV) standard for exhaust emissions and the federal inherently low-emission vehicle (ILEV) evaporative emission standard, as well as vehicles that meet the state's enhanced advanced technology partial zero-emission (enhanced AT PZEV) vehicles or transitional zero emission vehicle (TZEV) standard. Liquefied petroleum gas (LPG) and compressed natural gas (CNG) fueled vehicles may also qualify. Visit ARB's website at for additional information on vehicle eligibility.

Other toll agencies in California.