A woman killed by a self-driving Uber car as she crossed the road has been identified.
Elaine Herzberg, 49, was crossing a four-lane road in the city of Phoenix, Arizona, when she was struck by the autonomous vehicle.
The robot car is still in the testing phase and had a human driver also at the wheel at the time in case of emergency.
The exact circumstances of the crash remain unclear, but Uber has suspended all testing of self-driving cars in Arizona, Pittsburgh and Toronto.
Experts claim the new technology will drastically cut down on motor vehicle fatalities in the future.
But Monday’s fatal accident has sparked fresh debate about whether self-driving cars can be trusted.
"This tragic accident underscores why we need to be exceptionally cautious when testing and deploying autonomous vehicle technologies on public roads," said Democratic Senator Edward Markey, a member of the transportation committee, in a statement.