(a) shall, when picking up or setting down passengers, stop the bus as close to the left or near side of the road as is safe and practicable so to do;
(b) shall not, when the bus is in motion, speak to any person unless it is necessary to do so on grounds of safety;
(c) shall not unreasonably delay the bus on any journey;
(d) shall shut off the engine and ensure that all the passengers are removed from the bus before filling the petrol or oil tank and keep such engine shut off and ensure that all passengers remain out of the bus until such filling is completed;
(e) shall shut off the engine if, for any reason, he leaves the bus unattended.