Existing U.S. laws pose few barriers to adoption of autonomous vehicle technology so long as cars and trucks stick with existing designs allowing humans to take control, the NHTSA said Friday.

The U.S. is taking the first step toward requiring that commercial drivers and railroad workers be tested for a sleep disorder that causes drowsiness and has been linked to fatal wrecks.

Passengers on commercial flights in the U.S. wont be allowed to use e-cigarettes under a regulation designed to protect people from the devices second-hand vapor.

Investigators probing the disappearance of Malaysia Airlines Flight 370 are examining an object found off the coast of Mozambique they suspect came from the missing Boeing Co. 777.

The U.S. government wants to create a new category of micro drones that are built with materials that wont harm people in a crash, opening the door for more widespread uses in crowded places and other sensitive locations.

U.S. aviation safety officials are raising new warnings about the dangers of carrying bulk shipments of lithium-based batteries on commercial flights.

The U.S. air-traffic control system would be spun off to a nonprofit corporation and airline passengers wouldnt be allowed to talk on mobile phones under sweeping new legislation.

The engineer operating an Amtrak train that derailed in Philadelphia last year pushed its throttle to full, increasing the trains speed to 106 miles per hour, before entering a sharp curve.