Division 2.2.1.29 Brake failure and defect warning signal
United Kingdom
The requirements for optical warning signals, whose function is to indicate to the driver certain specified failures or defects within the braking equipment of the tractor or of the towed vehicle, are set out in the points 2.2.1.29.1- 2.2.1.29.6.3. The function of these signals shall be exclusively to indicate failures or defects in the braking equipment. However, the optical warning signal described in point 2.2.1.29.6 may in addition be used to indicate failures or defects in the running gear.