Signal repairs at Waddell Road and Sarival Avenue will cause overnight disruptions and detours starting 8 p.m. December 11, with expected completion by 7 a.m. the following morning.

A study reveals car crashes cost Arizona nearly $6 billion annually and suggests traffic safety law improvements as the state faces a rise in road fatalities.

ADOT is advancing plans for a passenger rail connecting Tucson to Phoenix, involving cost analysis, planning, and collaboration with local counties to identify stations and funding for the proposed line.