# Regulation (EC) No 1222/2009 of the European Parliament and of the Council of 25 November 2009 on the labelling of tyres with respect to fuel efficiency and other essential parameters (Text with EEA relevance), Division 4.1.3: Conditioning of the test track and wetting condition

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

The test track surface shall be watered at least half an hour prior to testing in order to equalise the surface temperature and water temperature. External watering should be supplied continuously throughout testing. For the whole testing area, the water depth shall be 1,0 ± 0,5 mm, measured from the peak of the pavement.
The test track should then be conditioned by conducting at least 10 test runs with tyres not involved in the test programme at 90 km/h.

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Source: https://www.legislation.gov.uk/eur/2009/1222/annex/V/division/4/division/4.1/division/4.1.3 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-1222/annex-V/division-4/division-4.1/division-4.1.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.