Document ID: chunk:federal_register_of_legislation:F2016C00773:clause:1_14:p33
Version: federal_register_of_legislation:F2016C00773
Segment Type: clause
Provision Reference: sch 1 cl 14 (pt 33/51)
Character Range: 94910–97607

road train
 (1) A trailer that:
 (a) would not otherwise be required to comply with an ADR relating to braking; and
 (b) is used in a B‑double or road train;
must comply with the requirements specified in second edition ADR 38 or third edition ADR 38 for the performance of the service brake system, the emergency brake system and the parking brake system.
 (2) A road train trailer to which subclause (1) applies need not be fitted with a mechanical parking brake if it carries wheel chocks that provide a performance equivalent to the performance requirement specified in that subclause for a parking brake system.
 (3) A semi‑trailer, irrespective of its date of manufacture, must have an anti‑lock braking system that meets the requirements of ADR 38/01 if:
 (a) it is being used in a B‑double that includes a road tank vehicle, whether or not the semi‑trailer is itself a road tank vehicle; and
 (b) the road tank vehicle is carrying dangerous goods.

6.15  Air brakes of a motor vehicle in a B‑double or road train
 (1) If a B‑double or road train is fitted with brakes that operate using compressed air, the braking system of the motor vehicle must meet the requirements in subclauses (2) and (3) when:
 (a) the pressure is measured in an 800 millilitre vessel connected by a 2 metre pipe with a bore of approximately 13 millimetres to the coupling head of the braking system; and
 (b) the initial air pressure is not less than:
 (i) the arithmetic average of the maximum and minimum pressures in the operating pressure range specified by the manufacturer of the vehicle; or
 (ii) if there is no manufacturer's specification—650 kilopascals.
 (2) The pressure must reach at least 420 kilopascals within 400 milliseconds after the rapid and complete application of the foot‑operated control of the braking system.
 (3) After the brakes have been fully applied, the pressure must fall within 500 milliseconds of the release of the foot‑operated control to 35 kilopascals.

6.16  Air brakes in a B‑double or road train: least favoured chamber
 (1) The pressure in the least favoured chamber of the braking system of a B‑double or road train whose brakes operate using compressed air must meet the requirements of subclause (2) when the initial air pressure is not less than:
 (a) the arithmetic average of the maximum and minimum pressures in the operating pressure range specified by the manufacturer of the vehicle; or
 (b) if there is no manufacturer's specification—650 kilopascals.
 (2) The pressure must reach at least 420 kilopascals within:
 (a) 1.0 seconds of the rapid and complete application of the foot‑operated control on a B‑double; or
 (b) 1.5 seconds of the rapid and complete