This document defines a description of common terms and symbols used in the field of bicycles and two wheeled Electric Power Assisted Cycles (EPACs). The terms are classified under a nomenclature of different parts of bicycles and two wheeled EPACs, and presented in several languages.nd edition 2019-09 Cycles — Terminology Cycles — Terminologie Reference number ISO 8090:2019(E) ？ ISO 2019 ISO 8090:2019(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO 2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any m