Arizona’s HOV lane rules require at least two people in the vehicle during weekday rush hours on Phoenix-area freeways, and driving solo in one during those hours carries a flat $200 civil penalty. Outside those hours, the lane is open to everyone.
When and Where the Rules Apply
HOV restrictions run from 6 a.m. to 9 a.m. and 3 p.m. to 7 p.m., Monday through Friday.1Arizona Department of Transportation. High Occupancy Vehicle (HOV) At any other time, including nights, weekends, and holidays, any vehicle can use the lane regardless of how many people are inside.
The lanes exist only in metro Phoenix, spanning more than 42 miles across I-10, State Route 202, and a short stretch of I-17. Drivers in Tucson or elsewhere in the state won’t run into them.
Who Counts as the Second Person
During restricted hours, the vehicle must carry at least two people, including the driver.2Arizona Legislature. Arizona Code 28-737 – High Occupancy Vehicle Lanes; Civil Penalty; Definition A passenger of any age qualifies. A child in a car seat satisfies the minimum, so a parent driving with one child is fine.
Vehicles That Can Use the Lane Solo
A few vehicles are exempt from the two-person minimum during restricted hours:2Arizona Legislature. Arizona Code 28-737 – High Occupancy Vehicle Lanes; Civil Penalty; Definition
- Motorcycles, whether or not they carry a passenger.
- Buses and other public transportation vehicles, whether publicly owned or operated under contract with a public agency.
- Police, fire, and ambulance vehicles driven by first responders in the line of duty.
- Tow trucks actively performing their duties.
Electric and Alternative Fuel Vehicles No Longer Qualify
Until September 30, 2025, drivers of electric and other alternative fuel vehicles with special plates or stickers could use HOV lanes solo during restricted hours. That access came from a federal provision in 23 U.S.C. ยง 166, which Congress did not extend.3Arizona Department of Transportation. Federal Change Set for Oct. 1 Affects Electric Vehicle HOV Lane Access
Since October 1, 2025, vehicles with Alternative Fuel or Energy Efficient license plates no longer qualify for solo use during restricted hours.1Arizona Department of Transportation. High Occupancy Vehicle (HOV) EV and hybrid drivers now need a second occupant during rush hours like everyone else.
What a Violation Costs
Driving solo in an HOV lane during restricted hours results in a flat $200 civil penalty.2Arizona Legislature. Arizona Code 28-737 – High Occupancy Vehicle Lanes; Civil Penalty; Definition The statute treats this as a civil penalty rather than a criminal fine, so it is not a traditional moving violation. Enforcement generally happens through officer observation and highway patrol presence during peak commute times.
Crossing the Double White Lines
Arizona HOV lanes are separated from general traffic by double white lines. You can cross them to enter or exit the lane as long as you meet the occupancy requirement during restricted hours. There’s no prohibition on crossing the lines themselves. Weaving in and out during heavy traffic still invites attention, and an unsafe lane change can be cited separately under general traffic laws.