With-flow cycle lane sign: what it means
This blue sign shows a cycle lane running the same way as the traffic. You must not drive or park in it during its times of operation.
What does the with-flow cycle lane sign mean?
Know your traffic signs describes it as a mandatory with-flow pedal cycle lane: vehicles must not be driven or parked in this lane during its times of operation. Hours of operation may be shown.
Rule 140 says you must not drive or park in a cycle lane marked by a solid white line during its times of operation.
Quick quiz
What does the sign at the top of this page mean?
- A cycle lane in the same direction as you.
- Cyclists come the other way in their own lane.
- A lane for buses, and any vehicles shown.
Show answer
A. A cycle lane in the same direction as you. It marks a mandatory cycle lane going the same way as the traffic (Know your traffic signs). Source: Know your traffic signs: bus and cycle signs and road markings, GOV.UK; The Highway Code, rule 140, GOV.UK; Traffic sign images, Department for Transport, GOV.UK
Where will you see it?
On urban roads with a cycle lane marked by a solid white line.
What should you do?
Keep out of the cycle lane. Give way to cyclists in it, including when you turn left across it.
What do people get wrong?
Cutting across a cyclist in the lane to turn left. Rule 140 says give way to cyclists in a cycle lane.
Common questions
Can I park in a cycle lane?
Not in a lane marked by a solid white line during its times of operation, and not in any cycle lane while waiting restrictions apply (rule 140).
What about a broken white line?
Rule 140 says do not drive or park in it unless it is unavoidable.
Compare with
Contraflow cycle lane signCyclists come the other way in their own lane.
Bus lane signA lane for buses, and any vehicles shown.
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 (bus and cycle signs and road markings) and The Highway Code rule 140.
- Know your traffic signs: bus and cycle signs and road markings, GOV.UK
- The Highway Code, rule 140, 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.