Controls on GHG emissions from mobile sources
A) have been in place in the United States since the Clean Air Act of 1970
B) were recently established by the EPA and the National Highway Traffic Safety Administration (NHTSA)
C) are implemented solely through CAFÉ standards issued by the EPA
D) apply solely to heavy-duty trucks and rail transport vehicles

Question

Quizplus · Accepted Answer

The EPA and the National Highway Traffic Safety Administration (NHTSA) recently established controls on GHG emissions from mobile sources through the Phase 2 rules for medium and heavy-duty vehicles. While the Clean Air Act of 1970 did establish emissions standards for automobiles, it did not specifically address GHG emissions. CAFÉ standards issued by the EPA do play a role in reducing GHG emissions, but they are not the sole means of control. The controls also apply to both medium and heavy-duty vehicles, not just trucks and rail transport vehicles.

Controls on GHG Emissions from Mobile Sources