Works on dual carriageways with a speed limit of 40 mph or less - HAUC

Know Your Speed Limits - Driving Test Success

Traffic control for temporary obstruction of the carriageway - HAUC

Page:UK Traffic Signs Manual - Chapter 3 Regulatory Signs. 2008 (Second Impression 2008).pdf/120 - Wikisource, the free online library

Works at road junctions - HAUC

Chapter Traffic Management

Dual carriageway - Wikipedia

Mobile works - HAUC

Traffic control by priority signs - HAUC

Works on dual carriageways with a speed limit of 40 mph or less - HAUC

How to Drive on Dual Carriageways

Dual carriageway - Wikipedia

Sequence for setting out signs - HAUC

Quazar Cone Signs, Chapter Traffic Management Kit

Dual carriageway - Wikipedia