A jeweler based in Tucson, Erik Stewart makes regular drives two hours up Interstate 10 to do business in Phoenix. If a high-speed rail line connected the cities, he said he’d use it.

A federal judge on Wednesday ordered Gov. Jan Brewer's office to turn over some internal documents about its policy of denying drivers' licenses to people who were brought into the country illegally as children but allowed to stay under a new federal program.

If generally accepted predictions of global warming come to pass, Arizona’s transportation system will have to adapt due to stronger dust storms, snowfall, flooding, forest fires and other factors, experts say.

Barely an hour before the crash Tuesday afternoon, Sen. Steve Farley, D-Tucson, participated in a contentious and successful attempt to overthrow a Democratic leader. But sitting still in the middle of a freeway on his way back to Tucson, with his hands behind the wheel and with zero visibility, Farley thought how inconsequential the morning’s political drama had been against the tragedy that unfolded before him.

The iArizona Committee is headed by Mesa Mayor Scott Smith and backed by a broad coalition of local politicians, construction contractors and business interests. Their ultimate goal is to boost Arizona’s economy and status as a transportation hub connecting Los Angeles, Dallas and Mexico, as well as linking Arizona’s manufacturing and economic hubs to one another.

Buster Johnson is living proof — literally — that U.S. Highway 93, which provides Phoenix area residents with direct access to Las Vegas, is one of Arizona’s most dangerous roads.

Gov. Jan Brewer met this afternoon with members of her cabinet to discuss preparations for a possible shutdown of the federal government, which would affect a wide array of Arizona agencies and services, and even the Grand Canyon State's namesake.

The Arizona Department of Transportation formally banned driver’s licenses for all illegal immigrants who received deferred action from the federal government, potentially heading off a federal court ruling against a similar policy for children who were brought to the country illegally.

"Move Over!" That's the message from the Arizona Department of Transportation and the Department of Public Safety in an effort to keep emergency responders, highway crews and stranded motorists safe along highways.

State transportation officials will have to be shown there's a safety problem before allowing cities to put photo enforcement on state highways under a bill approved Monday by the Arizona House.