This standard specifies requirements and test method for brake performance of motorcycles and mopeds.
This standard is applicable to motorcycles and mopeds.
This standard is not applicable to vehicles for the disabled.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 5359.4 Term for motorcycles and mopeds—Part 4: Mass of vehicle with two and three wheels
GB/T 5378 Methods of road test for motorcycles and mopeds
GB/T 15089-2001 Classification of power-driven vehicles and trailers
ASTM E867 Terminology relating to vehicle-pavement systems
ASTM E1136 Specification for a radial standard reference test tire
ASTM F408 Test method for tires for wet traction in straight-ahead braking, using a towed trailer
ASTM F457 Test method for speed and distance calibration of fifth wheel equipped with either analog or digital instrumentation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 15089-2001 for Category L vehicles and the followings apply.
3.1
brake system
a combination of components consisting of control, transmission, and brake, but excluding engine, whose function is to progressively reduce the speed of a moving vehicle, bring it to a halt, and keep it stationary when halted
3.2
control
a part actuated directly by the rider in order to supply or control the energy required for braking the vehicle to the transmission
3.3
transmission
a combination of components that provide the functional link between the control and the brake
3.4
brake
parts of the brake system where the forces opposing the movement of the vehicle are developed
3.5
service brake system
a brake system which slows down the vehicle when in motion
3.6
secondary brake system
second service brake system on a vehicle equipped with a combined brake system
3.7
single brake system
a brake system which acts on only one axle
