Road signs, Traffic signals ahead
What does the traffic signals warning sign mean?
Traffic signals ahead that you may not be able to see yet.
A red triangle with a red, amber and green traffic light.
What you must do
Slow down and be ready to stop, as the lights may already be red.
Where you will see it
Approaching lights on a fast road or just after a bend.
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 leftKeep rightMini-roundaboutMinimum speedCrossroads aheadT-junction aheadRoundabout aheadBend aheadTwo-way trafficRoad 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.