The government on Friday proposed new carbon-emissions standards for big trucks as part of President Barack Obama ’s broad climate-change agenda, a move many in the trucking industry cautiously support as a way to save money on fuel. The Environmental Protection Agency and the Transportation Department jointly announced draft standards for big vehicles ranging from garbage trucks to 18-wheelers, as well as from vans and buses to heavy-duty pickup trucks. “In 2014, trucking spent nearly $150 billion on diesel fuel alone,” said Glen Kedzie, a vice president of the American Trucking Associations. “So the potential for real cost savings and associated environmental benefits of this rule are there.” EPA Administrator Gina McCarthy The administration is proposing two broad categories of standards for big trucks: one for the load-pulling tractor unit of large so-called semitrailers and one for the trailer it hauls. The tractor standard will require that a truck […]