Tuesday is the day when most of the 321 measures approved by the Legislature take effect.

In today’s developing field of driverless vehicles, Scott Smith, who as CEO oversees the massive mass transportation system operated by Valley Metro, is excited about the prospect of utilizing autonomous technology.

Tucson is truly a community where you can live, work and play. Home to breathtaking mountain views, the renowned University of Arizona and coveted climate that provides ample amounts of sunshine, the Old Pueblo is well positioned to support physical activity. Yet, it is also home to traffic congestion and health complications. In fact, according to the Arizona Department of Health Services, in 2017, there were 1,984 deaths in Pima County related to heart disease.

State transportation officials are increasing their use of remote technology to help keep traffic moving on portions of highways that pass through various communities across Arizona.

Sometime this summer, police will have a new excuse to pull you over. Gov. Doug Ducey signed legislation Tuesday that requires each and every tail and brake light on your vehicle to be working.

Upset with protesters who tried to block a Donald Trump rally last month in Fountain Hills, Republican state senators voted Thursday to allow judges to impose six-month jail terms on those who stop traffic headed to political rallies.

Traffic delays in Tucson and Phoenix last year cost the average commuter more than $1,000 in extra fuel and lost time, among other costs, according to a new report on rush-hour congestion on the nation’s highways.

Lawyers for the state are taking legal steps designed to eventually allow police to arrest day laborers who step in to traffic to solicit work.

Phoenix and Las Vegas are linked by a road that narrows to two lanes, hits stoplights in a Depression-era town and until recently backed up traffic over the Hoover Dam.

Stricter U.S. gun measures are needed to stem the flow of guns to Mexico, where the weapons are fueling violence and leaving people “under siege” with little hope of help from their government, activists said Thursday.