Division 2.1.8.1

For the purpose of determining the in-use braking forces of each axle of the vehicle, with a compressed-air braking system, air pressure test connections must be provided:

1. 2.1.8.1.1.

   In each independent circuit of the braking system, at the closest readily accessible position to the brake cylinder which is the least favourably placed as far as the response time described in Annex III is concerned.

2. 2.1.8.1.2.

   F1In a braking system which incorporates a device that modulates the air pressure in the brake transmission as referred to in point 6.2 of Appendix I to Annex II, located in the pressure line upstream and downstream of this device at the closest accessible position. If this device is pneumatically controlled an additional test connection is required to simulate the laden condition. Where no such device is fitted, a single pressure test connection, equivalent to the downstream connector mentioned in point 2.1.5.1 of this Annex, shall be provided. These test connections shall be so located as to be easily accessible from the ground or within the vehicle.

3. 2.1.8.1.3.

   At the closest readily accessible position to the least favourably placed energy storage device within the meaning of point 2.4 of section A of Annex IV.

4. 2.1.8.1.4.

   In each independent circuit of the braking system so it is possible to check the input and output pressure of the complete transmission line.

5. 2.1.8.1.5.

   The pressure test connections shall comply with clause 4 of ISO Standard 3583:1984.