B次元官网网址 of a fatal pedestrian crash involving a self-driving Uber vehicle that some experts say exposes flaws in autonomous vehicle technology is prompting calls to slow down testing on public roads and renewing concerns about regulatory readiness.

The 22-second video shows a woman walking from a darkened area onto a street just before an Uber SUV in self-driving mode strikes her. It was released by police in Tempe, Arizona, following the crash earlier this week.

Three experts who study the emerging technology concluded the video, which includes dashcam footage of the driverB次元官网网址檚 reaction, indicates the vehicleB次元官网网址檚 sensors should have spotted the pedestrian and that it should have initiated braking to avoid the crash that killed 49-year-old Elaine Herzberg on Sunday night.

It was the first fatality of a self-driving vehicle, and Uber has suspended its testing as the investigation proceeds.

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The investigation included police and federal safety officials using the crash vehicle and the victimB次元官网网址檚 bicycle to recreate the crash to conduct braking and visibility tests at the scene Thursday night, azfamily.com reported.

Raj Rajkumar, who heads the autonomous vehicle program at Carnegie Mellon University, said the video was revealing in multiple ways, including that the driver appeared distracted and that Herzberg appeared to have been in the roadway and moving for several seconds and still her presence wasnB次元官网网址檛 sensed.

Laser systems used in the vehicles, called Lidar, can carry a blind spot, he said.

B次元官网网址淎ll of this should be looked at in excruciating detail,B次元官网网址� he said.

HerzbergB次元官网网址檚 death occurs at time when eagerness to put autonomous vehicles on public roads is accelerating in Silicon Valley, the auto industry and state and federal governments. More than 100 auto manufacturers and industry associations in early March sent a letter urging Congress to expedite passage of a proposal from Sen. John Thune, R-South Dakota, that aims to provide regulatory oversight and make it easier to deploy the technology.

After the crash, groups like Vision Zero, Advocates for Highway and Auto Safety and other safety-minded organizations urged the Senate Committee on Commerce, Science and Transportation to pause consideration of ThuneB次元官网网址檚 proposal until the Tempe crash investigation is completed.

B次元官网网址淭he stage is now set for what will essentially be beta-testing on public roads with families as unwitting crash test dummies,B次元官网网址� the letter said.

Thune, who chairs the science committee, said in a statement Thursday that the crash underscores the need to adopt laws and policies tailored to self-driving vehicles.

B次元官网网址淐ongress should act to update rules, direct manufacturers to address safety requirements, and enhance the technical expertise of regulators,B次元官网网址� Thune said.

Scott Hall, spokesman for the Coalition of Future Mobility, which represents a variety of auto, consumer and taxpayer interest groups, said Thursday it supports the bill because a national framework of rules governing testing and deployment of technology is needed to avoid a 50-state patchwork of laws.

Data from the National Conference of State Legislatures shows that states are increasingly introducing legislation over autonomous vehicles B次元官网网址� 33 in 2017. More than 20 states have already enacted autonomous vehicle legislation.

Uber, Intel, Waymo and GM are testing autonomous cars in Arizona, which does not require them to get a permit. After the Tempe crash, Gov. Doug Ducey, who lured the companies to the state with a promise of minimal regulation, warned against jumping to conclusions.

He noted both the Tempe police and the National Transportation Safety Board is investigating.

The Associated Press