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ROCKVILLE, Md. — A proposed federal rule that would allow motor carriers to drug test their drivers and prospective employees using hair samples continues to wind its way slowly through the bureaucracy, but could be made public as soon as early next year.

Here are the 10 most-read stories on the Transport Topics website in 2019, based on Google Analytics.

Takata Corp., the auto parts supplier that went bankrupt after its air bags spurred the largest-ever recall, told U.S. safety regulators that another 1.4 million U.S. vehicles need to be repaired over a potentially deadly defect.

President Donald Trump’s administration asked a federal judge to throw out California’s lawsuit seeking to preserve its power to regulate tailpipe greenhouse gas emissions, saying Washington has the last word in setting fuel economy standards.

The complexity of building a bullet train through Southern California’s urban maze is leading state officials to consider two major additions: a tunnel under the Burbank airport and a project that would help a freight railroad expand its switching yards in the Inland Empire.

The U.S. average retail price of diesel rose 0.4 cent to $3.07 a gallon, the Department of Energy reported Dec. 2.

The U.S. freight rail system is arguably the best and most efficient in the world.

LONDON — London’s transit authority Nov. 25 refused to renew Uber’s operating license over concerns about impostor drivers, with the ride-booking company vowing to appeal the decision as it struggles to secure its future in the British capital.

Federal trucking regulators are nearing completion of a formal notice that they plan to delay implementation of the Entry Level Driver Training rule by up to two years after it was set to go into effect on a limited basis Feb. 7.