BS ISO 16234:2006

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
  3.1 Terms and definitions
  3.2 Symbols
4 Principle
5 Measuring equipment
6 Variables
7 Test conditions
  7.1 General
  7.2 Test track
  7.3 Test vehicle
8 Test method
  8.1 Condition and temperature of the brakes
  8.2 Initial driving conditions
  8.3 Performance of the braking procedure
  8.4 Time references
9 Data evaluation
  9.1 General
  9.2 Validity criteria
  9.3 Time history
  9.4 Characteristic values
  9.5 Further additional evaluation
Annex A (normative) Test report - General data and test
        conditions
Annex B (normative) Test report - Presentation of results
Bibliography

Specifies an open-loop test method for determining vehicle reactions during a straight-line braking manoeuvre on a surface having a split coefficient of friction.

This international Standard describes an open-loop test method for determining vehicle reactions during a straight-line braking manoeuvre on a surface having a split coefficient of friction.

It applies to heavy vehicles, i.e. commercial vehicles, commercial vehicle combinations, buses and articulated buses as defined in ISO3833 (trucks and trailers with maximum weight above 3,5 tonnes and buses and articulated buses with maximum weight above 5 tonnes, according to ECE and EC vehicle classification, categories M3, N2, N3, O3 and O4).

The method is limited to vehicles in which at least the first unit is equipped with an anti-lock braking system. It is valid for braking with service-brake systems only or in combination with retarders and/or engine brakes.