The vehicles in §B of this regulation are exempt from the provisions of this chapter. Exempt vehicles include the following vehicles: A zero-emission vehicle; A fire or rescue apparatus or ambulance, owned or leased by a state or local government, by a rescue squad, or by a volunteer fire or ambulance company, registered as an emergency vehicle as defined in Transportation Article, §11-118, Annotated Code of Maryland; A vehicle registered as a Class D motorcycle; A vehicle registered as a Class E truck with a registered gross vehicle weight greater than 26,000 pounds; A vehicle registered as a Class E farm truck; A vehicle registered as a Class F truck tractor; A vehicle registered as a Class F farm truck tractor; A vehicle registered as a Class H school vehicle; A vehicle registered as a Class K farm area vehicle; A vehicle registered as a Class L historic vehicle; A vehicle registered as a Class N street rod vehicle; A vehicle registered as a Class P passenger bus; A vehicle registered as a Class R low speed vehicle; A vehicle powered solely by electricity or diesel fuel; A vehicle with a gross vehicle weight of 8,500 pounds or less and of model year earlier than 1996; or A military vehicle owned by the federal government and used for tactical, combat, or relief operations, or for training for these operations.