Bus and cycle signs
Route for use by buses and cycles only
What it means
A blue circle, so this is a sign giving an order, not a suggestion: the route is for buses and pedal cycles. Bus gates in town centres are the usual place you will meet one, and many are camera-enforced. You MUST NOT drive past it, even to turn round, so plan a route that avoids it.
Highway Code Rule 109 — read it on GOV.UK
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Other bus and cycle signs
Sign images: Department for Transport, © Crown copyright. Used under the Open Government Licence v3.0.