Regulation 42

be securely attached to the vehicle in such manner as not to be liable to displacement or damage due to vibration or other cause;

be so placed or insulated as not to be adversely affected by the heat from the exhaust system; and

be provided with a filler cap or cover or lid so designed and constructed that it can be securely fitted in position to prevent the spilling of fuel contained therein while the vehicle is travelling on a road.

be so protected as not to enable the fuel in the tank to catch fire; and

be so designed as to prevent fuel from being splashed over.