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Approving a regulatory framework for autonomous vehicles would facilitate the technology’s adoption throughout the national transportation landscape, top Republicans on a U.S. House committee indicated this month.

LAS VEGAS — Autonomous and electric-powered trucks hold great potential to improve safety and efficiency in the freight transportation sector, but it will take time for these emerging technologies to overcome various market challenges and achieve widespread commercialization, industry executives said.

TuSimple Holdings Inc., an autonomous trucking startup that’s been the subject of U.S. investigations, said it hasn’t shared self-driving technology with another startup with Chinese ties.

Hong Kong International Airport says it’s ready to use driverless buses, confident it can shuttle passengers around the aerodrome starting next year after extensive trials years in the making.

U.S. safety regulators are investigating reports that autonomous robotaxis run by General Motors’ Cruise can stop too quickly or unexpectedly quit moving, potentially stranding passengers.

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Over the past year, the autonomous trucking sector has accelerated efforts to test its technology in real-world applications.

Autonomous vehicle companies and suppliers have collectively spent around $75 billion developing self-driving technology, with scant sign of meaningful revenue emerging from robocar services.

Waymo, Alphabet Inc.’s driverless vehicle unit, plans to expand its robotaxi service to Los Angeles, the third region where it will be offered.