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Driven by increases in cocaine, methamphetamine and marijuana, drug use in 2017 by the general U.S. workforce held steady at its highest rate in more than a decade, according to an analysis by drug test lab Quest Diagnostics.

U.S. 93 out of Las Vegas is among the most dangerous and congested routes for some drivers.

The Boulder City, Nev., area will soon be home to a new interstate highway, according to Federal Highway Administration.

A series of high-profile accidents involving self-driving cars is slowing the mad rush into the autonomous-vehicle business, according to a report issued May 2.

A demand from the California DMV of eight companies testing self-driving cars has highlighted a number of areas where the technology falls short of being safe to operate with no human backup.

Gov. Doug Ducey signed a law April 25 that would allow the director of the Arizona Department of Transportation to levy another fee on vehicles.

A new federal rule due for implementation in June that would eliminate the need for truck drivers to carry their medical cards has been delayed for three years due to a hack of the registry of certified medical examiners in December.

An aviation reauthorization bill with a provision that would ensure nationwide uniformity for meal-and-rest-break rules for truckers was advanced by the U.S. House of Representatives on April 27 on a 393-13 vote.

The Road to Zero Coalition announced three more recipients of the Safe System Innovation Grants on April 23.

National Safety Council CEO Deborah Hersman noted the goal of the newly formed Road to Zero Coalition is to dramatically reduce traffic deaths.