A safety sign from the The Private Crossings (Signs and Barriers) Regulations 1996, Diagram 101; posted at private level crossings where for pedestrians, advising them to beware of trams and to look and listen before crossing.
This is a variant for tram crossings.
Drawn according to The Private Crossings (Signs and Barriers) Regulations 1996 and RSSB standards.
UK Government
This file: The Navigators