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Most motor carriers doing business with the federal government are believed to have responded to a requirement that they do their best to purge technology systems of five banned Chinese technology providers said to be potential hackers into U.S. intelligence and defense agencies’ information systems.

Tesla Inc., whose boss Elon Musk says he can develop a fully self-driving car without using laser-sensor technology, has a contract to use such lidar sensors from Luminar Technologies Inc. for testing and development, according to people familiar with the matter.

A group of senators said it reached a bipartisan agreement on highway funding a day after Republicans rejected the Biden administration’s trimmed-down $1.7 trillion infrastructure proposal.

The expected increase in commercial drone operations such as delivery flights is prompting accident investigators to expand the types of aviation crashes they plan to review.

The nationwide lockdowns brought on by the pandemic cleared the roads of many passenger vehicles and helped truckers keep goods moving. However, as passenger cars gradually return, industry experts are considering how those pandemic-era roads affected safety and how drivers will respond once they start getting crowded again.

The ongoing Interstate 40 bridge closure is a costly interruption for the trucking industry that will likely stretch on for months.

LOS ANGELES — California’s Department of Motor Vehicles is reviewing whether Tesla is violating a state regulation by advertising its vehicles as being fully autonomous without meeting the legal definition of self-driving.

OMAHA, Neb. — Even as railroads are operating longer freight trains that sometimes stretch for miles, the companies have drastically reduced staffing levels, prompting unions to warn that moves meant to increase profits could endanger safety and even result in disasters.