NTERNATIONAL STANDARD TSO) 3784 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION·MEKAYHAPOIHA OPTAHW3ALIM IO CTAHIAPTH3ALIHM·ORGANISATION INTERNATIONALE DE NORMALISATION Road vehicles --- Measurement of impact velocity in collision tests Vehicules routiers - Mesure de la vitesse d'impact dans les essais de collision First edition - 1976-07-01 ISO 3784-1976 (E) UDC 629.113 Ref. No. 1SO 3784-1976 (E) Descriptors : road vehicles, tests, impact tests, collisions, velocity measurement. Price based on 3 page: Preisgr. C FOREWORD IsO (the International Organization for Standardization) is a worldwide federation of national standards institutes (IsO Member Bodies). The work of developing International Standards is carried out through ISO Technical Committees. Every Member Body interested in a subject for which a Technical Committee has been set up has the right to be represented on that Committee. International organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. Draft International Standards adopted by the Technical Committees are circulated to the Member Bodies for approval before their acceptance as International Standards by the IsO Council. International Standard ISO 3784 was drawn up by Technical Committee ISO/TC 22, Road vehicles, and circulated to the Member Bodies in May 1975. It has been approved by the Member Bodies of the following countries : Germany Australia Spain Hungary Sweden Austria Belgium Iran Switzerland Italy Turkey Bulgaria Japan United Kingdom Chile Netherlands U.S.A. Poland Yugoslavia Czechoslovakia Finiand Romania South Africa, Rep. of France No Member Body expressed disapproval of the document. @ International Organization for Standardization, 1976 : Printed in Switzerland 1SO 3784-1976 (E) INTERNATIONAL STANDARD Road vehicles - Measurement of impact velocity in collision tests 1 SCOPE AND FIELD OF APPLICATION 2.2 The impact velocity measurement shall be made within 0,2 s prior to impact. This International Standard lays down the accuracy of measurement of the impact velocity in collision tests on road vehicles. In addition, some typical methods suitable for the measurement of this impact velocity are described in the annex. These methods are intended to facilitate the laboratories. 3 METHODS OF MEASUREMENT Typicalmethods measuring impact velocity for are 2 PERFORMANCE described in the annex. Other methods may be used 2.1 The accuracy of velocity measurement shall be ± 1 %. provided they meet the requirements of 2.1 and 2.2.