No driver of a vehicle shall drive between the vehicles comprising a funeral or other authorized procession when they are in motion and when such vehicles are conspicuously designated, unless otherwise directed by a police officer to do so; provided, however, that this rule shall not apply to drivers of authorized emergency vehicles. All vehicles in such funeral procession shall at all times while moving follow the vehicle ahead as close as is practicable and safe.
(1968 Code §15-124)