This document is transcribed from material held by the UK National Archives at "http://www.legislation.gov.uk/uksi/1975/1536/contents/made"
The copyright notice for that site states: "All content is available under the Open Government Licence v3.0 except where otherwise stated"
This is NOT an official Transcription.
This instrument was revoked by later regulations, and does NOT represent current practice or advice, concerning Traffic signs or road markings.