At a time when political gridlock in Washington has blocked climate legislation, EPA and NHTSA have jointly come forward with a sensible proposal  that will substantially reduce oil consumption and greenhouse gas (GHG) pollution from heavy-duty trucks. EPA and NHTSA’s proposed new rules build on their recent success in finalizing GHG and fuel efficiency standards for cars and light-duty trucks . Once again, the two agencies collaborated with industry to make sure their standards accomplish environmental and energy security goals in a practical manner.
The transportation sector  is responsible for 27 percent of our nation’s GHG emissions. Within this sector, heavy-duty vehicles are the second largest source of emissions (after light-duty vehicles), accounting for 20 percent of the sector’s total. The new proposal covering heavy-duty vehicles (long-haul trucks, large pick-ups and vans, school and transit buses, and utility trucks) manufactured from 2014 through 2018 is estimated to reduce emissions by 7-20 percent from these vehicles (depending on the category of truck) from current levels, achieving an overall reduction of 250 million metric tons of carbon dioxide over the life of the vehicles sold during this five-year period. As a result, emissions in 2030 from this fast growing subsector will be 9 percent below what they would have been in the business as usual case. The proposed rule is also estimated to reduce oil consumption by 500 million barrels over this same period.
Cost and Benefits
To achieve the proposed standards, truck manufacturers will need to modify their vehicles drawing from a range of existing technologies including improvements in aerodynamic designs, lower rolling resistant tires, advanced transmissions, and reduced idling. The agencies report that the cost of meeting the standard for many trucks will be recouped in less than 2 years in the form of fuel savings. The regulatory impact analysis  accompanying the proposed rule looks at both the costs and benefits of meeting the proposed standards. It shows the following:
Estimated Lifetime Discounted Costs and Benefits for 2014-2018 Model Year Heavy-Duty Vehicles
|3 percent discount rate||$ billions|
Source: Table I-4 of the proposed regulations .
The bottom line is clear – with a net benefit to society of $41 billion, the proposed rule is a worthwhile investment in reducing both our reliance on foreign oil and our emissions of greenhouse gases.
Steve Seidel is Vice President for Policy Analysis