# The M48 Motorway (Severn Bridge) (Temporary Prohibition of Traffic) Order 2017, Article 5


Articles 3 and 4 shall apply only during such times and to such extent as shall from time to time be indicated by traffic signs and shall not apply to:
(a) A vehicle being used for police, traffic officer, fire and rescue authority or ambulance purposes;
(b) Anything done at the direction of, or with the permission of, a constable or traffic officer in uniform.

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Source: https://www.legislation.gov.uk/uksi/2017/854/article/5 (the official version)
Page: https://openlegislation.uk/m48-motorway-severn-bridge-temporary-prohibition-of-traffic-order-2017/article-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.