Requires the EPA Administrator to let manufacturers suspend emissions-related engine shutdown and power-reduction features when temperatures are at or below 20 degrees Fahrenheit, and to allow permanent suspension for farm equipment and for vehicles run primarily north of 59 degrees north latitude.

• Directs the EPA Administrator, within 180 days of enactment, to revise Clean Air Act regulations so manufacturers may suspend emissions-control-triggered derate or shutdown functions when ambient temperatures are at or below 20 degrees Fahrenheit.
• Requires the engine to return to normal operation once temperatures rise above 20 degrees Fahrenheit.
• Authorizes manufacturers to permanently suspend those functions for agricultural equipment and for covered vehicles primarily operated north of 59 degrees north latitude.
• Provides that nothing in the bill waives compliance with any Clean Air Act emissions standard.

• Environment and Public Works Committee (Senate)

Environmental Protection