Document ID: chunk:federal_register_of_legislation:F2017L01554:body:0:p7
Version: federal_register_of_legislation:F2017L01554
Segment Type: other
Provision Reference: 
Character Range: 20241–23128

directly by the rider in order to supply or control the energy required for braking the vehicle to the transmission.

       2.9. "Different types of braking systems" means devices which differ in such essential respects as:

            (a) Components having different characteristics;

            (b) A component made of materials having different characteristics, or a component differing in shape or size;

            (c) A different assembly of the components.

       2.10. "Driver mass" means the nominal mass of a driver that shall be 75 kg (subdivided into 68 kg occupant mass at the seat and 7 kg luggage mass).

       2.11. "Engine disconnected" means when the engine is no longer connected to the driving wheel(s).

       2.12. "Gross vehicle mass" or "maximum mass" means the technically permissible maximum laden mass as declared by the manufacturer.

       2.13. "Initial brake temperature" means the temperature of the hottest brake before any brake application.

       2.14. "Laden" means so loaded as to attain the gross vehicle mass as defined in paragraph 2.12..

       2.15. "Lightly loaded" means mass in running order plus 15 kg for test equipment, or the laden condition, whichever is less.  In the case of ABS tests on a low friction surface (Annex 3, paras. 9.4. to 9.7.), the mass for test equipment is increased to 30 kg to account for outriggers.

       2.16. "Mass in running order" means the sum of the unladen vehicle mass and driver mass.

       2.17. "Peak braking coefficient (PBC)" means the measure of tyre to road surface friction based on the maximum deceleration of a rolling tyre.

       2.18. "Power-assisted braking system" means a brake system in which the energy necessary to produce the braking force is supplied by the physical effort of the rider assisted by one or more energy supplying devices, for example vacuum assisted (with vacuum booster).

       2.19. "Secondary brake system" means the second service brake system on a vehicle equipped with a combined brake system.

       2.20. "Service brake system" means a brake system which is used for slowing the vehicle when in motion.

       2.21. "Single brake system" means a brake system which acts on only one axle.

       2.22. "Split service brake system (SSBS)" means a brake system that operates the brakes on all wheels, consisting of two or more subsystems actuated by a single control designed so that a single failure in any subsystem (such as a leakage type failure of a hydraulic subsystem) does not impair the operation of any other subsystem.

       2.23. "Stopping distance" means the distance travelled by the vehicle from the point the rider begins to actuate the brake control to the point at which the vehicle reaches a full stop.  For tests where the simultaneous actuation of two controls is specified, the distance travelled is taken from the point