In all buildings, other than a one or two-family dwelling with garage accessory thereto, where space is provided for storage of motor vehicles, the following fire protection measures shall be followed:
The lawful capacity of each storage space shall be the number of vehicles that can be stored therein without blocking any aisle or exit. Storage of vehicles shall be so arranged and limited that each vehicle shall have free access to an egress from its parking space without necessitating the moving of more than one other vehicle.
A sign indicating the capacity as determined above shall be conspicuously posted near each entrance and exit of each garage in letters and figures not less than four inches high.
No person owning or being in charge or control of the storage space shall store or park, or cause or knowingly permit to be stored or parked, in the storage space, at any time, a number of vehicles exceeding the capacity of the storage space determined as hereinbefore provided.
No automobile repairs, fueling, changing of oil or body work of any kind shall be made in a basement or sub-basement garage.