VEHICLE, COMMERCIAL. Vehicles including, but not limited to, step up vans, heavy trucks, semi-trailers, truck tractors, tractor trailers, moving vans, delivery trucks, box trucks, dump trucks, tow trucks, wreckers, buses, school buses, cranes, draglines, earthmovers, bulldozers, backhoes, trenchers or similar vehicles. The term also applies to any recreational vehicles converted from a commercial vehicle and any vehicles used as a platform for a hoist, crane, compressor, tank(s), ladder trucks, or similar equipment or as a means of transporting or storing a commercial vehicle.