Warning sign
T-junction sign
What does the T-junction sign mean?
Warns of a T-junction ahead, where your road ends at another road. The wider line shows which road has priority.
Also known as: T-junction ahead sign
What it means
The road you're on meets another road at a T-junction ahead, so you'll need to turn left or right. Slow down and get ready to give way.
The symbol is a plan of the junction. In this version the top bar is wider, showing that the road you're joining has priority.
Slow down early, decide which way you need to go, and look for the give way or stop sign and markings at the junction.
Rules to know
The priority through the junction is indicated by the broader line.
Know Your Traffic Signs, p. 10
Look all around before emerging. Don't cross or join a road until there is a gap large enough for you to do so safely.
The Highway Code, Rule 170
Common mistakes
Mistake: Assuming you have priority because you're on the bigger-looking road.
Instead: The wider line in the symbol shows the road with priority. Here it's the road you're joining.
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© Crown copyright. Free to reuse under the Open Government Licence v3.0, as long as the sign is reproduced accurately and not in a misleading context.
Related signs
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Crossroads
Warning sign
A junction warning where roads cross.
Similar
Side road
Warning sign
A side road joining your road.
More warning signs
All warning signsSources
- Know Your Traffic Signs (Department for Transport, Sixth edition, 2023), Warning signs, p. 10
- The Highway Code, Rule 170
Sign image: Department for Transport, Traffic sign images (diagram 505.1). © Crown copyright, reused under the Open Government Licence v3.0.
Checked against these sources and reviewed by Bikash Thapa, full UK driving licence holder. Last reviewed 4 October 2026. This page explains the sign in our own words; for the full rules, see The Highway Code. How we source and check content