Division 3.5
United Kingdom
If the operation of the parking braking system on the tractor also operates a braking system on the towed vehicle, as permitted by point 2.1.2.3 of Annex I, then the following additional requirements shall be met:
- 3.5.1.
When the tractor is equipped according to point 2.1.4.1.1 of Annex I, the actuation of the parking braking system of the tractor shall actuate a braking system on the towed vehicle via the pneumatic control line.
- 3.5.2.
When the tractor is equipped according to point 2.1.4.1.2 of Annex I, the actuation of the parking braking system on the tractor shall actuate a braking system on the towed vehicle as prescribed in point 3.5.1 In addition, the actuation of the parking braking system may also actuate a braking system on the towed vehicle via the electric control line.
- 3.5.3.
F1When the tractor is equipped according to point 2.1.4.1.3 of Annex I or, if it satisfies the requirements of point 2.2.1.16.3 of Annex I without assistance from the pneumatic control line, point 2.1.4.1.2 of Annex I, the actuation of the parking braking system on the tractor shall actuate a braking system on the towed vehicle via the electric control line. When the electrical energy for the braking equipment of the tractor is switched off, the braking of the towed vehicle shall be effected by evacuation of the supply line (in addition, the pneumatic control line may remain pressurised); the supply line may only remain evacuated until the electrical energy for the braking equipment of the tractor is restored and simultaneously the braking of the towed vehicle via the electric control line is restored.