Electric cars can drive in HOV lanes, but only if they meet the same occupancy requirement as every other vehicle. The federal law that let states wave solo EV drivers into the carpool lane expired on September 30, 2025, and Congress has not renewed it.1Office of the Law Revision Counsel. 23 USC 166 – HOV Facilities Starting October 1, 2025, if the sign says 2+ or 3+, you need that many people in the car, whether you’re driving a gas sedan or a brand-new EV.
Why the Solo EV Perk Ended
The exemption came from 23 U.S.C. ยง 166, which gave state and local transportation agencies the option to let electric vehicles, plug-in hybrids, and other alternative fuel vehicles use HOV lanes with just the driver. The statute carried a hard sunset: the authority applied only “before September 30, 2025.”1Office of the Law Revision Counsel. 23 USC 166 – HOV Facilities When that date passed, every state lost its federal authorization to grant single-occupant HOV access to clean vehicles.
The Federal Highway Administration told states so directly in a pre-expiration memo, confirming that after the sunset, “States will not be able to allow, by sticker or special purpose license plate, all-electric vehicles and other qualifying non-gas fuel vehicles to drive in the HOV lanes with only a single occupant.”2Federal Highway Administration. Pending Expiration of Exemption for All-Electric and Alternative Fuel Vehicles in High Occupancy Vehicle Lanes A few state legislatures had passed extensions of their own in 2024, but those extensions were conditioned on federal authorization that no longer exists.
Your Old Clean Air Decal No Longer Works
Any EV decal, sticker, or special plate your state issued for HOV access stopped being valid for that purpose on October 1, 2025. You don’t have to peel the sticker off, but it won’t help you if an officer or a camera catches you driving alone in the diamond lane. Treat your EV like any other car at the HOV sign.
Penalties for Driving Solo in the Carpool Lane
This is where drivers who miss the change get burned. HOV violations typically run from around $75 for a first offense to $500 or more in states that enforce aggressively. Some jurisdictions add points for repeat violations, and insurers have started raising premiums for drivers with HOV tickets on their records even when no points attach.
Catching violators is also getting easier. A growing number of jurisdictions use automated camera systems with artificial intelligence and near-infrared imaging to count how many people are in a car, and some pair the cameras with license plate readers to mail citations directly. Where fully automated ticketing isn’t permitted, the cameras still flag suspect vehicles for officers waiting downstream.
Toll Discounts Are a Different Benefit
Don’t confuse HOV lane access with toll discounts. High-Occupancy Toll lanes, often called express lanes, charge solo drivers a toll instead of banning them. Some states previously offered EV drivers both free HOV access and reduced tolls, and those were always two separate benefits. Toll discount or “green pass” programs for EVs may still exist in your area independently of the HOV change. If you use an express toll lane, check with the toll authority about current EV pricing rather than assuming your old transponder setting still applies, because several of those programs ended alongside the federal HOV exemption.
Could Congress Bring the Exemption Back?
There is a bill. The HOV Lane Exemption Reauthorization Act, introduced as H.R. 4948 in the 119th Congress, would extend the authorization through September 30, 2031.3Congress.gov. HR 4948 – HOV Lane Exemption Reauthorization Act As of this writing, it has not passed. Even if it does, your state would still need to reactivate its own program before you could legally use the lane solo again, which likely means a lag between any federal extension and renewed access on the road.2Federal Highway Administration. Pending Expiration of Exemption for All-Electric and Alternative Fuel Vehicles in High Occupancy Vehicle Lanes
What to Do Now
If you’ve been using the carpool lane solo with a clean air vehicle decal, stop. Meet the posted occupancy requirement or stay in the general-purpose lanes. For updates on any restored program, your state’s department of transportation website is the right place to watch, since implementation would happen at the state level after any congressional action.