Retro-reflectors

6.43.1 Motorcycles You may not ride your motorcycle, motorcycle with a sidecar or motor tricycle, on a public road unless there is fitted on the rear of such cycle a red retro reflector. 6.43.2 Light Motor Vehicles A light motor vehicle must be fitted on the rear of it with two red retro-reflectors, one on each side. 6.43.3 Heavy Motor Vehicle A heavy motor vehicle may not be used on a public road

Source: Rules manual §6.43