In relation to ordinary entrances and exits, a bus must meet the following requirements:

(a) unless otherwise approved by the Registrar, there must be only one ordinary entrance on the left side of the bus;

(b) there must not be an entrance or exit on the right side, other than –

(i) an emergency exit required under regulation 141 ; or

(ii) the driver's door;

(c) the height of an entrance must not be less than the interior height of the vehicle;

(d) an entrance must not be less than 550 millimetres wide.