Certain vehicles and vehicle combinations by virtue of their length must be fitted with side marker lamps and retro reflectors.

Side Marker Lamps

Vehicles over a certain length (including any overhanging load) must be fitted with additional side marker lamps.

In all cases, the lamps must be fitted a maximum of 2300mm from the ground and must be visible over an angle of 45° to the left and right when viewed in a direction at right angles to the longitudinal axis of the vehicle.

Motor Vehicles First Used Before 1 April 1991 and Trailers Manufactured Before 1 October 1990

  1. Vehicles or combinations of vehicles more than 18.3m overall length require on each side:

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