Document ID: chunk:federal_register_of_legislation:F2007C00514:reg:3:p1
Version: federal_register_of_legislation:F2007C00514
Segment Type: reg
Provision Reference: reg 3 (pt 1/3)
Character Range: 70157–73341

3
                                   S S S                                      15
                                   D D D                                      20.0
                                   W1 W1 W1 or W2 W2 W2                        20.0
"a":
S                                  Single tyre per wheel
D                                  Dual tyres per wheel
W 1                                ' Wide Single Tyre' (375 to 450 mm width)
W 2                                ' Wide Single Tyre' (over 450 mm width)

TABLE 3
CONSTANTS FOR DETERMINING AVERAGE DECELERATION

TEST                                CATEGORY          K 1     K 2
Service Brake Effectiveness Tests   MB, MC, MD, ME    1.0    130
                                    LEG, NA, NB, NC   1.0    115
Secondary Brake Tests               MB, MC, MD, ME    1.0     65
                                    LEG, NA, NB, NC   1.67   115
Water Effectiveness Check           MB, MC            1.67   130
                                                      1.67   115
Fade and 'Spike Stop 35/...'         MB, MC, MD, ME   1.25   130
Effectiveness Checks                LEG, NA, NB, NC   1.25   115

APPENDIX 1
Special Provisions for vehicles incorporating an 'Antilock System'.

       1.1. At speeds exceeding 15 km/h, the wheels on at least one axle in each axle group must remain unlocked when a 'Control' force of 685 N is suddenly applied on the 'Control' or in the case of a 'Control' which solely modulates 'Stored Energy' , full stroke of the 'Control' is suddenly applied , when braking from an initial speed of 40 km/h and also from an initial speed of 80 km/h (or greater) on a road surface having approximately uniform surface friction on both sides of the vehicle.

       1.1.1. This test is to be performed with the vehicle laden to 'Lightly Loaded Test Mass 35/...' and again with the vehicle laden to 'Maximum Loaded Test Mass 35/...'.

       1.1.2. Brief periods of locking of the wheels will, however, be allowed but stability must not be affected.

       1.1.3. The general test conditions from part 8 and the particular test conditions from clauses 8.3 and 8.6 including the requirements for deceleration must be used except that the requirements of this clause must be met on each test.

       1.1.4. These tests can be combined with those required in clauses 8.3 and 8.6. and can be conducted at any point in the brake test sequence.

       1.2. Any break in the supply of electricity to the 'Antilock System' and any electrical failure of the 'Antilock System' must be signalled to the driver by an optical warning signal appropriately labelled and located in accordance with clause 5.2.12.  The lamp may be common with or distinct and separate from any 'Service Brake System' failure 'Visible Indicator' lamp.

       1.2.1. In case of NC category vehicles, the warning signal must be;

       1.2.1.1. red or yellow if after the failure of 'Antilock System', the vehicle meets the performance requirements of all tests specified in part 8.

       1.2.1.2. red, if after the failure of 'Antilock System', the vehicle does not meet the performance requirements of all tests specified in