Division 2.1.4.1

The connections of the compressed-air braking systems between tractors and towed vehicles shall be provided according to the following points 2.1.4.1.1, 2.1.4.1.2 or 2.1.4.1.3.

1. 2.1.4.1.1.

   one pneumatic supply line and one pneumatic control line;

2. 2.1.4.1.2.

   one pneumatic supply line, one pneumatic control line and one electric control line;

3. 2.1.4.1.3.

   one pneumatic supply line and one electric control line. Until uniform technical standards have been agreed, which ensure compatibility and safety, connections between tractors and trailers conforming to the provisions of this point shall not be permitted.