All wrecker or towing equipment operators desiring to be called by the city police department shall have the following minimum equipment: two (2) one-ton wreckers, equipped with dolly, winch, line, booster brakes, axe, towbar, spare chains, blinker lights, emergency light, working light, broom, flares, wheel chocks, hydraulic jack, and fire extinguisher, in addition to other standard equipment on wreckers.