Sec. 4-6.503.   Units: Identification lettering.
   Each unit shall have printed on each side and the rear thereof, or in the case of an aircraft, on a sign in the window of the aircraft, the unit number and name of the service. The lettering for such identification shall be at least four (4") inches in height. (§ 1, Ord. 1515, eff. December 19, 2019)