(1) The operator of a bus shall not stop, stand, or park such vehicle upon any highway at any place other than a designated bus stop. This provision shall not prevent the operator of a bus from temporarily stopping in accordance with other stopping, standing, or parking regulations at any place for the purpose of and while actually engaged in the expeditious loading or unloading of passengers or their baggage.

(2) The operator of a bus shall enter a bus stop or passenger loading zone on a highway in such a manner that the bus when stopped to load or unload passengers or baggage shall be in a position with the right front wheel of such vehicle not farther than eighteen inches from the curb and the bus approximately parallel to the curb so as not to unduly impede the movement of other vehicular traffic.

(3) The operator of a taxicab shall not stop, stand, or park such vehicle upon any highway at any place other than in a designated taxicab stand. This provision shall not prevent the operator of a taxicab from temporarily stopping in accordance with other stopping, standing, or parking regulations at any place for the purpose of and while actually engaged in the expeditious loading or unloading of passengers.