BS ISO 11012:2009

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
  3.1 Terms and definitions
  3.2 Symbols
4 Principle
5 Variables
  5.1 Reference system
  5.2 Variables
6 Measuring equipment
7 Test conditions
8 Test procedure
  8.1 General
  8.2 Warm-up
  8.3 Initial driving condition
  8.4 Weave test procedure
  8.5 Transition test procedure
9 Data evaluation and presentation of results
  9.1 General
  9.2 Time histories
  9.3 Characteristic values for the weave test
  9.4 Characteristic values for the transition test
Annex A (normative) - Test report - General data and test
                      conditions
Annex B (informative) - Calculating the time delay from
                        sinusoidal data
Bibliography

Specifies two open-loop test methods for determining on-centre handling characteristics of a vehicle in response to specific types of steering input under closely controlled test conditions: - the weave test; and - the transition test.

This International Standard describes two open-loop test methods for determining on-centre handling characteristics of a vehicle in response to specific types of steering input under closely controlled test conditions:

• the weave test, and

• the transition test.

This International Standard 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, in accordance with ECE and EC vehicle classification, categories M3, N2, N3, O3 and O4).