What processes 2.6 million vehicle registration renewals each year and is celebrating a birthday? It's ServiceArizona.com.

Think you know the best course of action when you encounter an incident on the highway? Take our quiz and find out.

Our blog series "From the ADOT Archives" takes you back to downtown Phoenix in 1960.

National Traffic Incident Management Week is here and it's important to know what to do in a minor crash, both for your safety and others on the road.

If you're an avid Arizona traveler, then this challenge is for you!

In Maricopa, leaders from the city, ADOT, the Federal Highway Administration and elsewhere broke ground on an SR 347 project that will improve mobility and safety.

Before there were dune buggies, cars used a wooden boardwalk to cross sandy stretches near Yuma.

If you've ever wondered why you see unconventional safety messages on ADOT's electronic message boards, today's blog has the answer.

Join our Sunday Facebook challenge and pinpoint a spot in Arizona from a photo.

The "Honeymoon Trail" is just as romantic and picturesque as it was more than 100 years ago.

ADOT has done the research and analysis, but now we need from you about the long-range transportation plan.

In just one year the ADOT Border Liaison Unit has made strides in training truckers and improving safety.

Each year it's a good idea to brush up on winter travel safety.

Today we're sharing tips in both English and Spanish on how to properly notify the MVD when you've sold a vehicle.

Join our Facebook challenge and help located spots across the state.

Highway safety goes far beyond headlines and usually points driver behavior.

Winters are fierce at the Grand Canyon's North Rim. When park amenities close for the winter, we close SR 67 along with them.

While a lot has changed on I-17 in downtown Phoenix, a few things have endured over the years.

New digital signs look to improve safety along a mountainous stretch of I-17.

We've taken to the air to come up with this week's "Where in AZ??" challenge.