The Obama administration is stepping up its multisector climate agenda with a proposal that will further crack down on emissions from vans, buses, and heavy trucks.
The Environmental Protection Agency and National Highway Traffic Safety Administration Friday proposed rules that would slash carbon-dioxide emissions through 2027. The rules are expected to require new advances for engines, truck design, and tire efficiency and build on an initial set of truck-efficiency standards set in 2012.
For a tractor trailer, EPA says the fuel consumption and carbon-dioxide emissions could drop by 24 percent.
The standards announced today will cover vehicles starting in model year 2021 and for the first time incorporate trailers. The rules cover a range of vehicles, from large pickup trucks and vans to 18-wheelers and buses, with performance-based standards differing across vehicle type.
Trucks make up just 4 percent of the traffic on the road, but EPA says they account for 20 percent of the greenhouse-gas emissions from vehicles.
Unlike other aspects of the climate agenda, the truck rules have shown a surprising amount of harmony—the first phase of standards were largely noncontroversial, and industry groups have said they can help bring new technology onto the market that will save on fuel costs for fleet owners. EPA said it held more than 300 meetings with manufacturers, fleets, owner-operators, dealers, and other groups.