Sec. 14. (a) Except as provided in subsection (b), any part of the Indiana national guard parading or performing a lawful duty has the right-of-way in any street or highway through which the Indiana national guard passes.
(b) The Indiana national guard may not interfere with the following:
(1) The carriage of United States mail.
(2) The operations of any fire engine or fire department.
(3) A police vehicle.
(4) Any other emergency vehicle.