# Commission Regulation (EC) No 631/2009 of 22 July 2009 laying down detailed rules for the implementation of Annex I to Regulation (EC) No 78/2009 of the European Parliament and of the Council on the type-approval of motor vehicles with regard to the protection of pedestrians and other vulnerable road users, amending Directive 2007/46/EC and repealing Directives 2003/102/EC and 2005/66/EC, Division 4.2.1

Extent: E+W+S+N.I.

When the headform impactors are dropped from a height of 376 ± 1 mm in accordance with point 4.4. the peak resultant acceleration measured by one triaxial (or three uniaxial) accelerometer (accelerometers) in the headform impactor shall be:
(a) for the child/small adult headform impactor not less than 245 g and not more than 300 g;
(b) for the adult headform impactor not less than 225 g and not more than 275 g.
The acceleration time curves shall be uni-modal.

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Source: https://www.legislation.gov.uk/eur/2009/631/annex/part/V/division/appendix+i/division/4/division/4.2/division/4.2.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-631/annex/part-V/division-appendix+i/division-4/division-4.2/division-4.2.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.