Road signs, Keep left
What does the keep left sign mean?
Keep left. You must pass to the left of the sign.
A blue circle with a white arrow pointing down to the left.
What you must do
Move to the left of the island or obstruction the sign is on.
Where you will see it
Traffic islands and the start of a central reservation.
Easy to confuse with: Keep right
The mirror sign means keep right. See the keep right sign.
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 U-turnsNo left turnNo right turnNo overtakingWeight limitNo motor vehiclesKeep 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.