I. Applicability. This rule applies to any heavy-duty diesel engine powered motor vehicle, including all school buses, and all gas powered vehicles, commonly referred to as white fleet.

II. Requirements. Operators of vehicles described in (1) above are prohibited from idling for more than five (5) consecutive minutes. Idling is the continuous operation of a vehicle’s main drive engine while the vehicle is stopped.

III. Exemptions.

A. To idling while stopped in traffic conditions over which the driver has no control, including being stopped for an official traffic control device or sign, in a line of traffic, at a railroad crossing, at a construction zone, or at the direction of law enforcement;

B. To idling of buses 10 minutes prior to passenger loading and when passengers are onboard if needed for passenger comfort;

C. If idling is necessary for a police, fire, ambulance, public safety, or other vehicle being used in an emergency or training capacity;

D. If idling is necessary to verify that the vehicle is in safe operating condition as required by law and that all equipment is in good working order, either as part of a daily vehicle inspection or as otherwise needed, provided that engine idling is mandatory for such verification;

E. If idling is necessary to accomplish work for which the vehicle was designed, other than transporting goods or people, for example: operating a lift, crane, pump, drill, hoist, mixer, or other auxiliary equipment other than a heater or air conditioner;

F. If idling is necessary to operate defrosters, heaters, air conditions, or other equipment to prevent a safety or health emergency, but not solely for the comfort of the driver.