Single track road sign: what it means
The single track road sign warns that the road ahead is only wide enough for one vehicle, with passing places at intervals.
What does the single track road sign mean?
Know your traffic signs describes it as a narrow road ahead with passing places at intervals. Rule 155 explains how to use the passing places.
Quick quiz
What does the sign at the top of this page mean?
- Pull in here to let others pass.
- The road gets narrower ahead.
- A narrow road with passing places ahead.
Show answer
C. A narrow road with passing places ahead. It warns of a narrow road ahead with passing places at intervals (Know your traffic signs). Source: Know your traffic signs: information signs, GOV.UK; The Highway Code, rule 155, GOV.UK; Traffic sign images, Department for Transport, GOV.UK
Where will you see it?
At the start of single-track roads in the country and in the hills.
What should you do?
Drive slowly, look well ahead and plan where you will pull in when you meet another vehicle.
What do people get wrong?
Driving at normal speed. You may have to reverse to a passing place if you meet someone where there is no room.
Common questions
What should I do if I meet a car with no passing place nearby?
Rule 155 says if necessary, reverse until you reach a passing place.
Should I let faster traffic overtake?
Yes. Rule 155 says pull into a passing place on your left if the driver behind wants to overtake.
Compare with
Want to test someone else? Play a road-sign quiz with friends and family.
Sources
Checked on 4 November 2026 against Know your traffic signs (information signs) and The Highway Code rule 155.
- Know your traffic signs: information signs, GOV.UK
- The Highway Code, rule 155, GOV.UK
- Traffic sign images, Department for Transport, GOV.UK
Contains public sector information licensed under the Open Government Licence v3.0. Traffic sign images are Crown copyright, from the Department for Transport. Sources and image credits.