.02 Interstate Operation.

Notwithstanding the provisions of the Transportation Article, §22-218, Annotated Code of Maryland, nothing shall prohibit the interstate operation through Maryland of out of state police vehicles, equipped with and displaying red and/or blue oscillating or flashing lights, and fire department vehicles, rescue squad vehicles or ambulances, equipped with and displaying red and/or white oscillating or flashing lights while en route, at the scene of, or returning from an emergency during the course of official duty. This regulation does not apply to vehicles engaged in an intrastate operation.