1 Scope
This document specifies the essential characteristics of a test track surface intended to be used for measuring rolling sound emission of vehicles and their tyres.
The surface design given in this document
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— produces consistent levels of tyre or road sound emission under a wide range of operating conditions including those appropriate to vehicle sound testing,
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— minimizes inter-site variation,
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— limits absorption of the vehicle sound sources, and
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— is consistent with road-building practice.