Class A. -- Vehicles operated by state, county, city and volunteer fire departments.
Class B. -- Vehicles operated by law enforcement officers.
Class C. -- Vehicles designated as ambulances
Class D. -- Vehicles operated by members of a state, county or city civil defense organization.
Class E. -- Emergency road service vehicles, including wreckers.
Class F. -- Industrial plant emergency vehicles.
Class G. -- Safety patrol vehicles
Class H. -- Miscellaneous, including approved safety vehicles.
Class I. -- United States mail carriers.
W. Va. Code R. § 91-7-5