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West Virginia has adopted Part 392 of the Federal Regulations.
Part 392 applies to any self-propelled or towed motor vehicle used on a highway in intrastate and interstate commerce when the vehicle has a gross vehicle weight rating, gross combination weight rating, gross vehicle weight, or gross combination weight of 10,001 pounds or more, or is of any size transporting a placardable amount of hazardous materials.
A diesel-powered motor vehicle with a gross vehicle weight of 10,001 pounds or more engaged in commerce may not idle for more than 15 minutes in any continuous 60-minute period.
A bus or school bus may idle for up to 15 minutes in any continuous 60-minute period, except when idling is necessary to provide heating or air conditioning to maintain a safe temperature for passengers.
Exceptions — There is an exception for an occupied vehicle with a sleeper-berth for the purpose of air conditioning or heating:
This exception does not apply if the vehicle is parked at a location equipped with stationary idle reduction technology that is available for use at the start of the rest period.
There are also exceptions for:
The speed limit is 70 mph on rural interstates and 55 mph (or as posted) on primary highways.