1 Scope
This standard specifies the braking performance required by the vehicles equipped with anti-lock braking systems and its test procedure.
This standard is applicable to motor vehicles of Categories M, N and trailers of category O equipped with antilock braking system.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB 4094 Motor vehicles - Symbols for controls, indicators and tell-tales
GB 12676-1999 Road vehicle - Braking systems - Structure, performance and test methods
GB/T 15089 Classification of power-driven vehicles and trailers
GB/T 17619 Limits and methods of testing for immunity of electrical/electronic sub-assemblies in vehicles to electromagnetic radiation
GB 18655 Limits and methods of measurement of radio disturbance characteristics for the protection of receivers used on board vehicles (GB 18655-2002; IEC/CISPR 25: 1995, IDT)
ISO 7638 Road vehicles - Connectors for the electrical connection of towing and towed vehicles
3 Definitions
For the purposes of this standard, the following terms and definitions apply.
3.1
antilock braking system, ABS
system which automatically controls the degree of slip, in the direction of rotation of the wheel(s), on one or more wheels of the vehicle during braking
3.2
sensor
component designed to identify and transmit to the controller the conditions of rotation of the wheel(s) or the dynamic conditions of the vehicle
Foreword i
1 Scope
2 Normative references
3 Definitions
4 Classification
5 Performance requirements and test procedure
Annex A (Normative)
Annex B (Normative) Adhesion coefficient utilization rate
Annex C (Normative) Braking performance on differing adhesion (split adhesion) road surfaces
Annex D (Normative) Method of selection of the low-adhesion road surfaces
Annex E (Informative) Testing procedure for vehicles fitted with antilock braking system
