John M Simpson, privacy and technology project director with Consumer Watchdog, said the vehicles could not accurately predict human behavior. "We need to slow down".
Uber first started to test the vehicles in Arizona in February a year ago.
Hyundai, a latecomer to autonomous driving, has been speeding up its development and expanding cooperation with tech companies and startups.
The crash could be a setback for autonomous vehicle research and may lead to stricter regulations from states and the federal government, said Bryant Walker Smith, a University of SC professor who studies the technology. 'Drivers owe a duty of care to other road users, and if that duty of care is breached, there is liability.
News of a self-driving Uber pedestrian fatality is fueling concerns over how such a thing could happen, especially since so many have been worrying that driverless cars are just accidents waiting to happen. The person asked not to be identified talking about such a sensitive topic. The Colorado Public Utilities Commission company fined Uber's parent company $8.9 million in November 2017 after an investigation determined the ride-hailing service had hired almost 60 drivers with previous felony convictions. But the two episodes are different.
Fact: According to National Highway Traffic Safety Administration data, 37,461 lives were lost on US roads in 2016, including 5,987 pedestrian fatalities. But the fallout was largely contained to Tesla. He said it did not appear as if the auto had slowed down before impact and that the Uber safety driver had shown no signs of impairment. In 2017, Uber briefly pulled its vehicles from roads after an Uber self-driving vehicle in Tempe landed on its side. This time, though, it's the first accident that's resulted in a fatality, so Uber is surely conducting its own internal tests. Still, many researchers believe that more self-driving cars will ultimately be safer than their human counterparts - and they may be right.
The NTSB said it will investigate "the vehicle's interaction with the environment, other vehicles and vulnerable road users such as pedestrians and bicyclists". The video Waymo released earlier this month was collected from test riders in Chandler, about 14 miles from Tempe.
Why was there a driver behind the wheel?
Optimus Ride did not immediately reply to a request for comment. A Chandler representative said the city has no plans to change its arrangement with Waymo.
Uber said it has stopped testing self-driving vehicles throughout the United States and Canada. From the footage, it did not appear that the pedestrian was using a crosswalk, but looking at the street design, it did make it appear as if that section was inviting people to cross.