Auxiliary power system definition
Auxiliary power system or “APS” means any device that is permanently dedicated to the vehicle on which it is installed and provides electrical, mechanical, or thermal energy to the primary diesel engine, truck cab, and/or sleeper berth, bus’s passenger compartment or any other commercial vehicle’s cab, as an alternative to idling the primary diesel engine.
Auxiliary power system or "APS" means any device that provides electrical, mechanical, or thermal energy to the primary diesel engine, truck cab, or sleeper berth, as an alternative to idling the primary diesel engine.