ISO INTERNATIONAL STANDARD 16121-4 Second edition 2011-08-01 Road vehicles Ergonomic requirements for the driver's workplace in line-service buses - Part 4: Cabin environment Vehicules routiers - Exigences ergonomiques du poste de conduite dans les bus de ville. Partie 4: Environnement dans la cabine Reference number ISO 16121-4:2011(E) @ ISO 2011 IHSunder Not for Resale ISO 16121-4:2011(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either isO at the address below or Iso's member body in the country of the requester. ISO copyright office Case postale 56 : CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2011 - All rights reserved itted without license from IHS Not for Resale ISO 16121-4:2011(E) Contents Page Foreword Introductior 1 Scope 2 Normative references 3 Terms and definitions 4 Climate, ventilation... 4.1 Basic requirements . 4.2 Climate of driver's cab 4.3 Ventilation ...... 4.4 Windscreen defrosting and demisting.. 4.5 Air quality .... 5 Noise inside the vehicle.. Annex A (informative) Recommended heating performance .. AnnexB(informative)Recommendedperformanceofatypicalcabinairfilter Bibliography. Copyrght InternationalOrganizaiStandardizaoghtsreserved ii from IHS Not for Resi