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ANN ARBOR, Mich. — A leading expert on autonomous vehicles is calling on the federal government to develop a national driver’s test that such vehicles would have to pass.

For the second time in a year, California Gov. Gavin Newsom has vetoed legislation that would have required a driver to be in the cab when autonomous trucks are tested on state highways.

Hyundai Motor Group and self-driving car company Waymo announced a new partnership to incorporate Georgia-made electric vehicles into the next generation of robotaxis.

Toyota is boosting its investment in air taxi manufacturer Joby Aviation by $500 million to support plans for commercial production, bringing its total investment to $894 million.

The enforcement action stems from an October 2023 incident in San Francisco in which a Cruise robotaxi dragged a pedestrian about 20 feet before coming to a complete stop.

Autonomous vehicle company May Mobility Inc. is scaling back its expansion plans in Ann Arbor, Mich.

The testing is small scale, with at most five vehicles being run with test drivers at the wheel to do development work.

Cars can transmit information in real time to other cars and the various sensors posted along a road. The overarching objective is to dramatically curb roadway deaths and serious injuries.

For the second straight year, California lawmakers forwarded legislation to the governor that would require drivers to be in the cab during the testing of autonomous heavy trucks in the state.

Driver experiences and crashes involving Tesla's "Full Self-Driving" system have drawn the attention of federal regulators.