To dramatically cut emissions from this sector, a comprehensive solution must include improved vehicle fuel efficiency, smart growth policies that reduce vehicle miles traveled, and clean fuel alternatives. (biopact.com)
A key element of the «Phase 2» heavy - duty vehicle fuel efficiency and greenhouse gas emissions standards adopted last fall was the program's inclusion of trailers for the first time. (aceee.org)
Driving habits and auto maintenance influence vehicle fuel efficiency by as much as 15 %. (issues.org)