Traffic Signs Manual Traffic Control 2019, Chapter 6 (Traffic Signs Manual - All Parts) by Stationery Office Paperback, 75 Pages, Published 2020 by The Stationery Office/Tso ISBN-13: 978-0-11-553744-8, ISBN: 0-11-553744-9
Traffic signs manual Chapter 8: Traffic safety measures and signs for road works and temporary situtaions by GreatBritain: DepartmentForTransport Paperback, 162 Pages, Published 2016 by Tso ISBN-13: 978-0-11-553510-9, ISBN: 0-11-553510-1