TRAFFIC RULES IN ARIZONA

Heading to the NASCAR Cup Series race is part of the fun, but understanding a few local driving rules will help make your trip to Phoenix Raceway smoother and stress-free. Arizona’s traffic laws are similar to those in most U.S. states, though there are a few key details worth noting.

Driving in Arizona

Traffic in Arizona moves on the right-hand side of the road. If you’re visiting from a country where driving is on the left, take your time getting used to turns, intersections, and merging onto highways near the Speedway.

Speed limits

Speed limits vary depending on the area:

• Residential zones: typically 25–30 mph (40–48 km/h)
• State routes: 55–65 mph (89–105 km/h)
• Interstate highways: up to 75 mph (121 km/h) in some rural areas

Always watch for posted signs – limits can drop quickly near ramps or junctions. Arizona police use radar and cameras, and speeding fines can be steep.

Traffic lights & intersections

Traffic laws are enforced strictly, and many busy intersections use red-light cameras. You may turn right on red after coming to a complete stop, unless signs say otherwise. Always yield to pedestrians and avoid entering an intersection on a yellow if stopping safely is possible.

Alcohol & driving

Arizona has zero tolerance for impaired driving. The legal blood alcohol limit is 0.08% for drivers aged 21 and over. For underage drivers, any trace of alcohol is illegal. During major events like NASCAR weekend, local authorities may set up DUI checkpoints around the Speedway. If you plan to drink, use a designated driver, taxi, or rideshare service.

Seat belt laws

Seat belts are mandatory for all occupants, no matter where they sit. Arizona is a primary enforcement state, meaning officers can pull you over solely for not wearing one. Make sure everyone buckles up before leaving your parking space.

Right-of-way & pedestrians

Drivers must stop for pedestrians in crosswalks and at unsignaled intersections. The first vehicle to arrive has the right-of-way; if two arrive simultaneously, the car on the right goes first. Around Phoenix Raceway, expect heavy foot traffic before and after the race – slow down and stay alert.

If you’re pulled over

If law enforcement signals you to stop, remain calm and pull over to the right-hand shoulder when it’s safe. At night, try to stop in a well-lit area. Keep your hands visible on the steering wheel, follow the officer’s directions, and be respectful throughout the interaction.