The Environmental Protection Agency (EPA) and the National Highway Traffic Safety Administration (NHTSA) today issued a joint notice of proposed rulemaking calling for both fuel consumption and greenhouse gas (GHG) reduction standards for medium- and heavy-duty trucks -- everything from "three-quarter-ton" pickups up to Class 8 heavy haulers. This rulemaking was mandated by a 2007 law passed by Congress and an Executive Order issued by President Obama earlier this year. Public comments on the proposal are due to the agencies by January 31, 2011. To comment follow the on-line instructions at www.regulations.gov.
The proposed rule would affect companies that manufacture, sell, or import into the United States new heavy-duty engines and new Class 2b through 8 trucks, including combination tractors, school and transit buses, vocational vehicles such as utility service trucks, as well as 3/4-ton and 1-ton pickup trucks and vans. The heavy-duty category incorporates all motor vehicles with a gross vehicle weight rating of 8,500 pounds or greater and the engines that power them, except for medium-duty passenger vehicles already covered by the greenhouse gas standards and corporate average fuel economy standards issued for light-duty model year 2012 to 2016 vehicles.
In their explanation of the just-published proposal, EPA and NHTSA agree with National Truck Equipment Association (NTEA) concerns and point out that involving body manufacturers and distributors in the compliance framework of this proposed rule would be too complex and that the widely divergent body styles and differing end uses of these trucks would make generalized body improvements of little value.
The proposed rule would create three categories with separate fuel consumption and GHG reduction regulations for each category. The categories are:
1. Combination Tractors
2. Heavy-Duty Pickup Trucks and Vans
3. Vocational Vehicles
Class 7 and 8 Combination Tractors
Generally, these vehicles are meant for long-haul use and are manufactured in such a way that the engine and chassis manufacturers can control compliance with new fuel efficiency and emissions regulations. The EPA and NHTSA have concluded that achieving reductions in GHG emissions and fuel consumption from combination tractors requires addressing both the cab and the engine, and the EPA and NHTSA are each proposing standards that reflect this conclusion.
Combination tractors would be subject to engine and full vehicle standards that begin in the 2014 model year. The proposed rules would require up to a 20% reduction in carbon dioxide (CO2) emissions and fuel consumption by the 2018 model year.
Heavy-Duty Pickup Trucks and Vans
This category includes 8,501- to 14,000-lb. pickups and vans (excluding medium-duty passenger vehicles already regulated under corporate average fuel economy, known as CAFE). These vehicles will be subject to more of a CAFE-type regulation -- a whole-vehicle regulation expressed as grams/mile for GHGs and gallons per 100 miles for fuel consumption based on weight-based measures such as payload and towing capacity and the presence of four-wheel drive. Chassis manufacturers will be responsible for meeting an annual fleet average.
The EPA and NHTSA recognize that some of these vehicles will be used in the work truck industry and will be completed or altered by companies like NTEA members. As such, they propose to move any incomplete vehicles in this weight category to the vocational truck category and leave in this category cab-chassis that would also be completed by final-stage manufacturers in a manner similar to strip chassis.