Document ID: chunk:federal_register_of_legislation:F2007C00493:front:0:p6
Version: federal_register_of_legislation:F2007C00493
Segment Type: other
Provision Reference: 
Character Range: 16246–19515

System' must be not less than 8 times the combined maximum energy capacity of the service brakes actuating devices. In the case of compressed air 'Braking Systems', the ratio of air reservoir volume to actuator volume will be taken as being the ratio of energy capacity.
7.3.                                    The elapsed time, as measured in accordance with the procedure specified in part 16 for measuring brake actuation time response must not exceed in the case of:
7.3.1.                              any brake actuator of any 'Axle Group' on the trailer, 0.35 seconds; and
7.3.2.                              any trailer or dolly rear service coupling for towed trailers, 0.25 seconds.
7.4.                                    The elapsed time, as measured in accordance with the procedure specified in part 16 for measuring brake release time, must not exceed in the case of:
7.4.1.                              the brake actuator on any trailer, 0.65 seconds; and
7.4.2.                              any, trailer or dolly, rear service coupling for towed trailers, 0.55 seconds.
7.5.                                    Each 'Unique' trailer 'Service Brake System' must be either tested in accordance with parts 10 and 11 or be shown by calculation, based on data for approved components, as detailed in part 17:
7.5.1.                              to have 'Established Retardation Coefficients' between the upper and lower boundaries of Figure 1; and
7.5.2.                              to reach an 'Established Retardation Coefficient' of no less than 0.45.
7.6.                                    Each 'Unique' trailer 'Service Brake System' must be shown by either test in accordance with parts 10 and 13 or by the calculation based on data for 'Approved' components in part 18, to meet the requirements of clause 13.1.
7.7.                                    Where a trailer is fitted with a 'Variable Proportioning Brake System' it must :
7.7.1.                              meet the requirements of clause 7.5 with the 'Variable Proportioning Brake Systems' device(s) set in the 'GTM' position ; and
7.7.2.                              be able to hold any 'Variable Proportioning Brake Systems' device(s) in the 'GTM' position; and
7.7.3.                              adjacent to the trailer 'Control Line' connectors have the notice: "Ensure Load Proportioning Brake System on trailer is HELD in LOADED POSITION if Tow Vehicle NOT Fitted with Load Proportioning or if it can not be determined that the towing vehicle has Load Proportioning Brake System.". A diagram clearly indicating how the Load Proportioning device is adjusted and where it is located must be located adjacent to this notice.
7.8.                                    Where the 'Service Brake System' incorporates an 'Antilock System' the requirements of APPENDIX 1 must be met.
8.                                          EMERGENCY BRAKE SYSTEM
8.1.                                    Each 'Unique' trailer 'Emergency Brake System' must be shown by either test in accordance with part 10 and clause 14.1 or by the calculation based on data for 'Approved' components in part 19, to have an 'Established Retardation Co-efficient' of not less than 0.18 and to be able to sustain a 'Brake'