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The Trump administration on Feb. 19 said it will cancel more than $900 million in federal grants earmarked for a high-speed rail project California that the state’s Democratic governor announced would be scaled back from its initial vision amid delays and cost overruns.

Colorado moved to boost electric-car sales by taking the first step toward adopting a zero-emission-vehicle mandate patterned after one in California that’s under threat from the Trump administration.

Fiat Chrysler Automobiles NV will pay hundreds of millions of dollars to settle a lawsuit brought by the U.S. Justice Department, which alleged some of its diesel-powered vehicles violated clean-air rules, a person familiar with the matter said.

U.S. auto safety regulators are moving to allow a new generation of brighter, self-dimming headlights that won’t blind other drivers on the road ahead. The National Highway Traffic Safety Administration is proposing to permit so-called adaptive driving beam headlights on new cars according to the agency.

The largest union for U.S. truck drivers, which has taken a cautious view of autonomous vehicles, called for stronger safeguards after a self-driving SUV operated by Uber Technologies Inc. killed a pedestrian in Phoenix on March 18.

A second federal safety agency has opened an investigation of an accident in which a Tesla car on “Autopilot” rammed into a parked fire truck.

U.S. transportation regulators plan to take another step toward rewriting federal rules hampering the development and adoption of autonomous technologies — from cars and trucks to buses and trains.

Federal regulators are taking the first step toward creating a policy to guide the development of autonomous transportation beyond cars to include trucks, buses and other ground-based modes.

California would ban the sale of new cars and trucks powered by fossil fuels in 2040 under legislation introduced Jan. 3 in the state legislature.

The National Highway Traffic Safety Administration is considering eliminating regulations that currently block self-driving vehicles designed without steering wheels, brake pedals or other driver controls from hitting the road.