Northern Territory Consolidated Regulations Northern Territory Consolidated Regulations(1) If the engine power of a motor bike is transmitted to the rear wheel by a chain, the driver and any passenger must be protected from the front sprocket and at least the upper part of the chain by:
(a) the frame or equipment of the motor bike; or
(b) a chain guard.
(2) A chain guard must cover the chain to a point:
(a) at least 300 millimetres to the rear of the rearmost foot rest; or
(b) above the centre of the rear drive sprocket.
contains requirements for a vehicle that help to identify the vehicle and, if the vehicle is unusually long, to warn other motorists.