# Commission Regulation (EU) 2017/1151 of 1 June 2017 supplementing Regulation (EC) No 715/2007 of the European Parliament and of the Council on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information, amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) No 1230/2012 and repealing Commission Regulation (EC) No 692/2008 (Text with EEA relevance), Division 3.2.10: Restraint blockage ratio


The restraint system mounting shall not be in front of the vehicle. The relative blockage ratio of the vehicle frontal area due to the restraint system, εrestr, shall not exceed 0,10.
εrestr=ArestrAfwhere:
εrestris the relative blockage ratio of the restraint system;
Arestris the frontal area of the restraint system projected on the nozzle face, m2;
Afis the frontal area of the vehicle, m2.

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Source: https://www.legislation.gov.uk/eur/2017/1151/annex/Sub/4/division/division/3./division/3.2./division/3.2.10. (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/4/division/division-3./division-3.2./division-3.2.10.
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.