(1)    Except as provided in sub. (4), the operator of a vehicle not in a funeral procession or military convoy shall yield the right-of-way at an intersection to vehicles in a funeral procession or military convoy when vehicles comprising such procession have their headlights lighted.

   (2)   The operator of a vehicle not in a funeral procession shall not drive the vehicle between the vehicles of the funeral procession, except when authorized to do so by a traffic officer or when such vehicle is an authorized emergency vehicle giving audible signal by siren.

   (3)   Operators of vehicles not a part of a funeral procession or military convoy shall not form a procession or convoy and have their headlights lighted for the purpose of securing the right-of-way granted by this section to funeral processions or military convoys.

   (4)   

      (a)    Operators of vehicles in a funeral procession or military convoy shall yield the right-of-way in accordance with s. 346.19 upon the approach of an authorized emergency vehicle giving audible signal by siren.

      (b)    Operators of vehicles in a funeral procession or military convoy shall yield the right-of-way when directed to do so by a traffic officer.

      (c)    The operator of the leading vehicle in a funeral procession or military convoy shall comply with stop signs and traffic control signals, but when the leading vehicle has proceeded across an intersection in accordance with such signal or after stopping as required by the stop sign, all vehicles in such procession may proceed without stopping, regardless of the sign or signal.