WVC 17 C- 13 A- 2
§17C-13A-2. Restrictions on idling.
No driver or owner of a diesel-powered motor vehicle with a
gross vehicle weight of ten thousand one pounds or more engaged in
commerce may cause, and no owner or operator of the location where
the vehicle loads, unloads or parks, may allow the engine of the
vehicle to idle for more than fifteen minutes in any continuous
sixty-minute period, except as provided under section three of this