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Motorists don’t like to pay more at the pump, and lawmakers worry that if they raise taxes on gasoline, they’ll be voted out of office.

The U.S. House Subcommittee on Digital Commerce and Consumer Protection unanimously approved a legislative markup July 19 to advance self-driving vehicle technology. Navigating the autonomous vehicle landscape has been difficult because of the traditional boundaries it breaks.

The trucking industry is predicting solid growth in the coming years, but it faces hurdles caused by increased regulation and an ongoing shortage of truckers.

Tractor trailer drivers who crest a hill shouldn’t rely solely on brakes to slow them on the way down. Trucking experts say doing so can result in brake failure and preventable accidents, which they say are often caused by young and inexperienced drivers.