1、 _ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising ther
2、efrom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2016 SAE International All rights reserved. No part of this
3、publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-49
4、70 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J268_201608 SURFACE VEHICLE RECOMMENDED PRACTICE J268 AUG2016 Issued 1971-09 Rea
5、ffirmed 2016-08 Superseding J268 DEC2010 Rear View Mirrors - Motorcycles RATIONALE J268 has been reaffirmed to comply with the SAE five-year review policy. 1. ScopeThis SAE Recommended Practice specifies recommendations for rear view mirror systems toprovide the operator with a clear view to the rea
6、r. It is intended as a supplement to the requirements formotorcycle mirrors given in 49 CFR 571.111.2. References2.1 Applicable PublicationsThe following publications form a part of the specification to the extent specifiedherein. Unless otherwise indicated, the latest version of SAE publications sh
7、all apply.2.1.1 SAE PUBLICATIONSAvailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.SAE J213Motorcycle ClassificationsSAE J964Recommended Practice for Measuring Haze and Reflectance of Mirrors2.1.2 ISO PUBLICATIONAvailable from ANSI, 23 West 43rd Street, 4th Floor, New York, NY 100
8、36.ISO 6682Earth Moving MachineryZones of Comfort and Reach for Controls2.2 Related PublicationsThe following publications are provided for information purposes only and are not arequired part of this document.2.2.1 CODE OF FEDERAL REGULATIONS (CFR)Available from the Superintendent of Documents, U.S
9、.Government Printing Office, Washington, DC 20402, http:/www.gpoaccess.gov/. The document can beviewed at http:/www.access.gpo.gov/nara/cfr/waisidx_01/49cfr571_01.html.49 CFR 571.111Rearview Mirrors3. ApplicationThis document applies to all classes of motorcycles, as defined in SAE J213, intended fo
10、r useon public roads.3.1 Operator DimensionsMotorcycles intended for adult operators should satisfy the requirement of thisdocument for an operator having the dimensions of a medium operator (ISO 6682). Motorcycles intendedspecifically for other than adult operators should satisfy the requirements o
11、f this document for the 50thpercentile of the intended operator population.4. Requirements4.1 Mounting4.1.1 Each mirror should have its entire reflective surface located between planes passing through the eyepoint ofan operator in the designed seating position, 45 degrees above and below and 60 degr
12、ees left and right ofthe forward line of sight (SAE J985).4.1.2 The mounting should provide for mirror adjustment to comply with 4.2.1.4.2 Field of View4.2.1 The mirror system should provide an operator in the designed seating position, an indirect rearward view of astraight level road surface exten
13、ding to the horizon, beginning at a point not greater than 30 m (98 ft) fromthe rearmost part of the vehicle. The mirror system should also provide a field of view extending from thevehicle centerline 3.7 m (12 ft) both left and right at a distance 10 m (33 ft) behind the rearmost portion of thevehi
14、cle.4.3 Mirror Construction4.3.1 REFLECTANCEThe mirror reflectance should be at least 50% when tested in accordance with SAE J964.5. Notes5.1 Marginal IndiciaThe change bar (l) located in the left margin is for the convenience of the user in locatingareas where technical revisions have been made to the previous issue of the report. An (R) symbol to the leftof the document title indicates a complete revision of the report.PREPARED BY THE SAE MOTORCYCLE COMMITTEEREAFFIRMED BY THE SAE MOTORCYCLE TECHNICAL STEERING COMMITTEE_SAE INTERNATIONAL J268 AUG2016 2 of 2
