The city traffic engineer is authorized to install and maintain parking meters in the foregoing parking meter zones or in any portion thereof. Such parking meters shall be installed upon the curb immediately adjacent to individual parking spaces to be designated as hereinafter provided. Such parking meters shall not be installed in such a manner as to allow parking across driveways, sidewalks or other zones or areas where parking is prohibited or restricted to certain classes of vehicles by laws of the state of Washington or ordinances of the city of Vancouver. Each parking meter shall be installed and set to display a signal showing legal parking upon deposit therein of the proper coin or coins of the United States and upon putting the meter in operation, as indicated by instructions on the meter, and for a period of time conforming to the limit of parking time which has been or may be established for that area or zone of the street upon which the parking meter is installed, said signal to remain in evidence until expiration of the parking period so designated, at which time a raising of the signal or some other mechanical operation shall indicate expiration of the parking period. (Ord. M-4088 §1, 2014)