A big rig driver traveling westbound on Interstate 80, just east of Donner Summit, encountered a vehicle issue early this ...

California’s efforts to limit pollution from diesel-powered trains and big rigs were stalled in anticipation ... rules for locomotives and semi-trucks because the U.S. Environmental Protection ...

Times of San Diego will send you the top local and state news at 8 a.m., 365 days a year. Sign up Diesel trucks leave the Port of Oakland with cargo. (File photo by Martin do Nascimento/CalMatters ...