Document ID: chunk:federal_register_of_legislation:F2014C01118:front:0:p10
Version: federal_register_of_legislation:F2014C01118
Segment Type: other
Provision Reference: 
Character Range: 29444–32620

or special trailers having a design speed less than 58 km/h, not less than the 'Manufacturer's' nominated design speed.
10.2.                                The trailer must be braked to a stop from initial speed starting with a 'Control Signal' of 0.2 'E' and in increasing increments of not greater than 0.2 'E' for subsequent stops until an 'Established Retardation Coefficient' of not less than 0.45 is achieved.
10.3.                                In the case of a compressed air 'Brake System' the 'Control Signal', applied to the 'Control Line' at the front of the trailer, must reach 65 percent of the final value in less than 0.4 second.
10.4.                                 'Stopping Distance' or 'Stopping Time' may be used to calculate the 'ERC' according to the equations in clause 10.5.
10.5.                                The 'Service Brake System' 'ERC' must be determined according to the following as required:

                 where:

            V  is the initial speed in km/h

            S  is the 'Stopping Distance' in metres

            T   is the 'Stopping Time' in seconds

            TR  is the response time measured from the time the 'Control' leaves the 'Initial Brake Control Location' until the energy level at the least favoured actuator reaches 65 percent of final value

            'Total Combination Mass' in tonnes

         'Total Trailer Axle Load'  in tonnes with the trailer loaded as specified in clause 9.6

10.6.                                The computed 'Established Retardation Coefficients' determined from clause 10.5 must comply with clause 6.5, where a test was not conducted at 1.0 'E' the 'ERC' from a test conducted at 0.8 'E' or greater may be increased pro-rata to derive 'ERC' at 1.0 'E'.
10.7.                                No trailer wheels must remain locked, except below 15 km/h, during completion of the braking tests required by part 10.
10.8.                                Allowance must be made for the effect of the increased rolling resistance resulting from the combination of vehicles being used to carry out the tests.
11.                                      DOG TRAILER FRICTION UTILISATION
11.1.                                In the case of 'Dog Trailers' at least one front 'Axle' must skid before at least one rear 'Axle' at an 'ERC' greater than:

         (a) 0.3 in the case of two 'Axle' 'Dog Trailers';

         (b) 0.15 in the case of 'Dog Trailers' with three or more 'Axles'.

11.2.                                The test must be conducted generally in accordance with part 10 with the 'Control Signal' and surface type selected to demonstrate the requirement of clause 11.1 above.
11.3.                                The initial speed requirement of part 10 does not apply.
12.                                      SERVICE BRAKE FADE EFFECTIVENESS TEST
12.1.                                The 'Service Brake System' must, on the next application after not less than 20 successive applications, each not more than 70 seconds after the preceding one and with the total of 20 applications completed within 20 minutes, of the trailer 'Brakes' from an initial speed of V1 km/h to