There is hereby established a traffic-control map and file to show at all times the City's current:
(a) Through streets;
(b) Stop intersections;
(c) Yield intersections;
(d) One-way streets and alleys;
(e) Loading zones, bus stops, and taxicab stands;
(f) Parking spaces, areas, and zones;
(g) Streets where trucks are prohibited;
(h) Snow emergency routes.