EV Drivers in Arizona | No Solo HOV Lane Use Starting 2025

As of October 1st, 2025, electric and alternative fuel vehicles in Arizona are no longer permitted to use High-Occupancy Vehicle (HOV) lanes with only the driver inside. This change comes after a federal exemption allowing solo EV and clean-fuel drivers access to HOV lanes expired without renewal from Congress. A wide array of vehicles are impacted by the change, including those powered by electricity, hydrogen, and other cleaner fuels.

Drivers of electric, hybrid, and alternative fuel vehicles in Arizona must follow new high-occupancy vehicle lane rules starting October 1st, 2025.

Federal Provision Expiration Ends Solo HOV Lane Access for Alternative Fuel Vehicles

Under 23 USC 166(b)(4), states previously had the option to let certain alternative fuel vehicles (AFVs) bypass traditional carpool requirements. However, with that exemption now lapsed, only vehicles carrying two or more occupants can use HOV lanes during restricted hours in the Phoenix metro area. These restrictions apply on weekdays from 6:00 a.m. to 9:00 a.m. and from 3:00 p.m. to 7:00 p.m.

What Is an Alternative Fuel Vehicle in Arizona?

A vehicle is considered an alternative fuel vehicle if it operates on cleaner energy sources rather than traditional gasoline or diesel. Common types of alternative fuel vehicles include:

• Electric vehicles
• Solar-powered vehicles
• Hydrogen-powered vehicles
• Natural gas vehicles using LPG or CNG

If a vehicle is modified to run on an alternative fuel, an inspection by the Arizona Department of Environmental Quality (ADEQ) is necessary for issuance of an Alternative Fuel Certificate to ensure the vehicle meets state alternative fuel standards.

Which Vehicles Can Still Use HOV Lanes in Arizona

Despite the change, some vehicles remain eligible for HOV lane access regardless of occupancy. This includes:

• Motorcycles
• Public transit buses
• Emergency response vehicles
• Tow trucks performing official duties

Drivers of electric, hybrid, and other alternative fuel vehicles–such as those using natural gas, propane, or hydrogen–must now follow standard occupancy rules. Vehicles displaying Alternative Fuel or Energy Efficient license plates no longer qualify for solo use of HOV lanes.

Enforcement and Resources for Drivers in Arizona

The Arizona Department of Public Safety (DPS) continues to enforce HOV regulations and may use officer discretion depending on the situation. The Arizona Department of Transportation (ADOT) offers helpful resources for drivers, including updated guidance on who can use HOV lanes and when. Arizona drivers should review these resources carefully to stay compliant and avoid potential traffic citations.

What This Means for Arizona Drivers

Many electric and alternative fuel vehicle owners who previously relied on HOV lanes for faster commutes in the Phoenix metro area are now required to follow standard traffic rules during peak hours. This means solo drivers of electric vehicles, hybrids, and other alternative fuel vehicles will face regular traffic congestion during weekday morning and evening rush hours.

Failure to comply with the updated HOV lane rules may result in traffic citations, fines, and potential points on your driving record, which may also impact auto insurance rates. It is important for drivers across Arizona to understand which vehicles are exempt, know the restricted hours, and stay aware of the enforcement practices for HOV lane use by the Arizona Department of Public Safety.

Reach Out to a Phoenix Car Accident Lawyer for Assistance Today

If you have been involved in a motor vehicle collision in an HOV lane in Phoenix or elsewhere in Arizona, you do not have to face the aftermath alone. Our skilled Phoenix auto accident attorneys will help you make informed decisions about the next steps. Call for a free consultation at (602) 777-3300. Our law firm proudly serves clients across the state of Arizona, including car wrecks in high-occupancy vehicle lanes.