(a) Every police, fire department and fire patrol vehicle and every ambulance used for emergency calls, except as provided in subsection (b) of this section, shall be equipped with a bell, siren or exhaust whistle.

(b) A vehicle used by a fire chief, deputy fire chief, assistant fire chief, or fire police officer of a duly organized fire department, which is not owned by or the property of the fire department, shall not be equipped with such warning devices.

36 Del. Laws, c. 10, § ?124; Code 1935, § ?5662; 21 Del. C. 1953, § ?4307; 57 Del. Laws, c. 670, § ?15A; 61 Del. Laws, c. 461, § ?2; 62 Del. Laws, c. 165, § ?1; 70 Del. Laws, c. 186, § ?1; 77 Del. Laws, c. 6, § ?2;