This Part does not apply to (a) a light vehicle built before 1931 that is used only in daylight; or(b) a light vehicle that is (i) designed mainly for use in a specialised activity such as agriculture or road construction; and(ii) built on a chassis of a type not normally used for building trucks; and(iii) used only in daylight.
Example for paragraph (b) :
Fork-lifts, tractors, graders and harvesters, towed equipment such as balers, brooms, mowers, ploughs, rakes and road-rollers.
Note :
The provisions of the Road Rules 2019 relating to driver obligations such as lighting and signalling continue to apply to a vehicle even if this Part does not apply to it. If, for example, a tractor driver is unable to give a hand signal of an intention to turn because the tractor is towing a grain trailer that obscures the view of following motorists, the grain trailer must be fitted with direction indicator lights in accordance with this Part.