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WASHINGTON — Updated federal guidance for manufacturers and states seeking to deploy self-driving vehicles could be released as early as summer, U.S. Transportation Secretary Elaine Chao told hundreds of executives attending the automated vehicle policy summit here.

Aurora Innovation’s 2018 is off to a booming start. The self-driving car company with offices in Pittsburgh and Silicon Valley started the year announcing partnerships with Hyundai and Volkswagen.

On Feb. 27, Ford announced it had chosen Miami-Dade to be the first large-scale test site of its self-driving vehicle fleet.

Self-driving cars with no human backup behind the wheel will be legal on California roads for testing and transporting the public starting April 2.

Where, exactly, does a federal fuel-tax increase fit in with plans for funding infrastructure? A look at the week ahead for trucking on Capitol Hill.

Though it will likely be a decade or more before commercial trucks roll down the road without human drivers, trucks with sophisticated, semi-autonomous driving systems will soon be on the street — with a person aboard to supervise.

As automakers spend billions to rack up autonomous miles and map city streets, Toyota Motor Corp. and BMW AG are also betting on a startup with a more modest approach.

YOKOHAMA, Japan — In the future Nissan envisions, driverless cars will pick up children from school and recommend restaurants to tourists in various languages.

Washington, D.C., is preparing for a future with self-driving cars by inviting companies to test their autonomous vehicle technology in the District.

The world’s largest car maker and biggest ride-hailing company plan to team up on autonomous driving as technological changes sweep through the transportation industry.