Brodrick, Christie-Joy; Lipman, Timothy; Farshchi, Mohammad - Institute of Transportation Studies (ITS), University … - 2002
A large number of heavy-duty trucks idle a significant amount. Heavy-duty line-haul engines idle about 20-40% of the time the engine is running, depending on season and operation. Drivers idle engines to power climate control devices (e.g., heaters and air conditioners) and sleeper compartment...