Heavy-Duty Vehicle Idle Reduction Requirement

A heavy-duty vehicle is not permitted to idle for more than five consecutive minutes in any 60-minute period. Exceptions are allowed for the following: traffic conditions; law enforcement purposes; emergency vehicles; military vehicles; power work-related operations; maintenance, servicing, repairing, or diagnostic purposes; sleeper berth temperature control during government mandated rest periods; auxiliary power units; heavy-duty diesel vehicles meeting California Air Resources Board's nitrogen oxide idling emission standards; and customer climate control comfort while providing customer services; prevention of safety or health emergencies. (Reference North Carolina Department of Environment and Natural Resources, Division of Air Quality Idle Reduction Rule)