BS ISO 21994:2007

Superseded

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Passenger cars. Stopping distance at straight-line braking with ABS. Open-loop test method

Available format(s)

Hardcopy , PDF

Superseded date

11-17-2022

Language(s)

English

Published date

07-31-2007

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Variables
  5.1 Reference system
  5.2 Variables to be measured
6 Measuring equipment
  6.1 Description
  6.2 Transducer installation
  6.3 Calibration
  6.4 Data processing
7 Test conditions
  7.1 General test conditions
  7.2 General data
  7.3 Test track
  7.4 Environmental conditions
  7.5 Test vehicle
8 Test procedure
  8.1 Test preparation
  8.2 Measurements
9 Data evaluation and presentation of results
  9.1 General
  9.2 Nomenclature of distances and decelerations
  9.3 Determination of normalized stopping distance
      s[A100,norm]
  9.4 Determining of ABS-braking distance
      s[L90,norm](100) (optional)
  9.5 Determination of normalised build-up distance
      s[F10,norm] (optional)
Annex A (informative) Test report - General data
Annex B (informative) Test report - Test conditions
        and results
Annex C (informative) Test sequence, specific terms and
        background information
Annex D (normative) Method for determination of F_ABS
Annex E (normative) Requirements for measurements and
        measuring equipment
Annex F (normative) Structure of the stopping distance
        calculation
Bibliography

Defines an open-loop test method to determine the stopping distance of a vehicle during a straight-line braking manoeuvre, with the Anti-lock Braking System (ABS) fully engaged. Applies to passenger cars as defined in ISO 3833 and light trucks.

This International Standard specifies an open-loop test method to determine the stopping distance of a vehicle during a straight-line braking manoeuvre, with the Anti-lock Braking System (ABS) fully engaged. This International Standard applies to passenger cars as defined in ISO3833 and light trucks.

This International Standard specifies a reference method and is especially designed to ensure high repeatability.

Committee	AUE/15
DevelopmentNote	Supersedes 06/30133193 DC. (07/2007)
DocumentType	Standard
Pages	34
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS ISO 21994:2022
Supersedes	06/30133193 DC : DRAFT FEB 2006

Standards	Relationship
ISO 21994:2007	Identical

ASTM E 1337 : 1990 : R2018	Standard Test Method for Determining Longitudinal Peak Braking Coefficient of Paved Surfaces Using Standard Reference Test Tire
ISO 3833:1977	Road vehicles — Types — Terms and definitions
ISO/TR 8349:1986	Road vehicles Measurement of road surface friction
ISO 15037-1:2006	Road vehicles Vehicle dynamics test methods Part 1: General conditions for passenger cars
ISO 8855:2011	Road vehicles — Vehicle dynamics and road-holding ability — Vocabulary
ASTM E 274 : 2006	Standard Test Method for Skid Resistance of Paved Surfaces Using a Full-Scale Tire

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BS ISO 21994:2007

Superseded

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referencing This Book

Category

Subcategory

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