Document ID: chunk:federal_register_of_legislation:F2025C00113:front:0:p24
Version: federal_register_of_legislation:F2025C00113
Segment Type: other
Provision Reference: 
Character Range: 67969–69604

indicated retardation force for each 'Axle' divided by the greatest of the 'Axle' retardation forces at which an 'Established Retardation Coefficient' of 0.45, calculated with 'Total Combination Mass' held equal to 'Gross Trailer Mass', can be achieved without wheel lock.
             1.               In the case of 'S-Cam' air 'Brake Systems' the overall effect of changing actuator and slack adjuster sizes can be simulated by individually adjusting the air pressure to each 'Axle'.

 1.                                       ALTERNATIVE STANDARDS
     1.                                 The technical requirements of the United Nations Regulation No. 13 – UNIFORM PROVISIONS CONCERNING THE APPROVAL OF VEHICLES OF CATEGORIES M, N AND O WITH REGARD TO BRAKING, incorporating the 11 series of amendments, are deemed to be equivalent to all technical requirements of this standard, except for the requirements of:
             1.           Clause 7.1.5, in the case of trailers designed for use in 'Road Train' combinations and equipped to tow another trailer, including any such 'Converter Dolly';
             1.           Clause 7.2.2, in the case of trailers with more than three 'Axles', or trailers without air suspension;
             2.           Clause 7.2.3, in the case of trailers equipped to tow another trailer with an 'ATM' greater than 4.5 tonnes; and
             3.           Clauses 9.2 to 9.4, in the case of trailers with an 'ATM' greater than 4.5 tonnes.

TABLE 1

GROUP 'AXLE LOAD' LIMITS

Number of 'Axles'  Tyre Type "a" and       Group 'Axle Load'
 in 'Axle Group'   Configuration           Limit (tonnes)