A South African Bureau of Standards (SABS) approve number plate shall be affixed—

in such a manner that it is not easily detachable;

in an upright position or within 30 degrees of such position;

in such a manner that each letter and figure thereon is clearly legible;

in such a manner that the whole number plate is clearly visible;

to the back of a motor cycle, motor tricycle, or trailer; and

one to the back and one to the front of all other motor vehicles.