Cars have always played a big role in Arizona life. But how did that start? You can thank this man, who bought and crashed ...

Incidents of wrong-way collisions on Arizona highways are decreasing, according to the state's Department of Public Safety.

Readers have asked about Arizona's cleaner-burning gasoline formulas. Do they improve air quality, health and greenhouse gas ...

The Arizona Board of Regents is considering funding a transportation research project that aims to make roads safer for ...

The Arizona Department of Transportation announced the completion of the 11-mile, $833 million project near Phoenix Sky ...

On Sunday, the Arizona Department of Transportation said the southbound lanes of State Route 87 near milepost 242, just south ...

The project includes new travel and HOV lanes in both directions between U.S. 60 and I-17. It was initially slated to be done ...

Residents of Southern Arizona have the opportunity to shape the future of the Sonoran Corridor, a proposed freeway south of ...

New integrated mobile-network vehicle-to-everything communication platform that allows a vehicle to communicate with other ...

As rain continued to fall across the Valley Monday morning, officials were investigating areas of flooding and multiple ...

ADOT said the Broadway Curve improvements were needed since traffic on the I-10 freeway is projected to increase by 25%.