Road signs, No U-turns
What does the no U-turn sign mean?
No U-turns. You must not turn round to go back the way you came at this point.
A red circle with a U-turn arrow crossed by a red diagonal line.
What you must do
Carry on and turn round somewhere safe, such as a roundabout or a side road.
Where you will see it
Central reservations and junctions on busy roads.
Test yourself
The theory test asks you to recognise signs like this one. Try the road and traffic signs quiz (with an easy and a hard set), or read the signs revision notes. Source: Know Your Traffic Signs.
Other common road signs
National speed limitSpeed limitNo entryStopGive wayNo waitingNo stopping (clearway)Ahead onlyTurn left aheadTurn right aheadOther dangerNo left turnNo right turnNo overtakingWeight limitNo motor vehiclesKeep leftKeep rightMini-roundaboutMinimum speedCrossroads aheadT-junction aheadRoundabout aheadBend aheadTwo-way trafficTraffic signals aheadRoad narrowsSlippery roadPedestrians in roadParkingBend to the leftDouble bendSide roadStaggered junctionSteep hill downwardsSteep hill upwardsUneven roadHump bridgeRoad humpsLevel crossing with barrierLevel crossing without barrierSchool or children crossingZebra crossing aheadCycle route aheadHorse ridersWild animalsFarm animalsQueues likelyNo vehiclesNo cyclingNo pedestriansHeight limitGive priority to oncomingTurn leftRoute for cycles onlyOne-way trafficNo through roadHospital
Meaning based on Know Your Traffic Signs and The Highway Code under the Open Government Licence v3.0. The sign image is our own simplified rendering for learning. Always check the current Highway Code on gov.uk. Not affiliated with or endorsed by the DVSA.