# The A40 Trunk Road (Western Avenue, Hillingdon) (Prescribed Routes) Order 1990, Article 4


No person shall cause or permit any vehicle to proceed in the westbound exit slip road and in the westbound access slip road in any direction other than from east to west.

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Source: https://www.legislation.gov.uk/uksi/1990/1334/article/4 (the official version)
Page: https://openlegislation.uk/a40-trunk-road-western-avenue-hillingdon-prescribed-routes-order-1990/article-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.