Division 5.2.5.1

In the case of towed vehicles equipped with an electric control line the message ‘illuminate stop lamps’ shall be transmitted by the towed vehicle via the electric control line when the towed vehicle braking system is activated during ‘automatically commanded braking’ initiated by the towed vehicle. However, when the retardation generated is less than 0,7 m/s², the signal may be suppressed.

At the time of type approval, compliance with this requirement shall be confirmed by the vehicle manufacturer.