The oxford commuter x4 is a rear facing lighting system featuring a powerful central light and fibre optic straps it is designed to make you more visible to other road users and thereby improve your safety the distinctive shape helps road users to judge your distance width and speed the fibre optic straps creat a visible side profile at junctions and help hgv drivers to see you more clearly from above the central projective light provides upto 70 lumens depending on setting with 5 available