Support us

Traffic lightsUnited Kingdom

An introduction to the traffic rules and road signs of United Kingdom. Learn about driving, road safety and much more in our illustrated book, with answers to frequently asked questions.

For informational purposes only. Always follow official regulations. Some content and images were created with AI assistance.

Traffic signs
Traffic rules
United Kingdom

39. Traffic lights

Traffic lights use coloured lights, arrows or symbols to regulate when road users may proceed, must prepare to stop or must remain stopped. Separate signals may apply to particular directions, lanes, pedestrians, cyclists or public-transport vehicles.

A green light permits movement only when the route is clear and the movement is otherwise legal. Road users must still follow priority rules, turning restrictions, lane markings and instructions from authorised traffic controllers.

Traffic lights
Traffic lights near Pulteney Bridge. (Bath, England, United Kingdom)
Wikimedia.org • -wuppertaler • CC BY-SA
What must a driver do at red, amber and green signals in the United Kingdom?

Red and red together with amber both mean stop. A steady amber also requires stopping unless it appears when stopping safely is no longer practicable. Green permits movement only when the route is clear.

🔗 gov.uk • Great Britain, Highway Code, light signals controlling traffic; 🔗 nidirect.gov.uk • Northern Ireland, official Highway Code, 2020 edition

May you turn at a red traffic light in the United Kingdom?

Do not treat a red traffic light as permission to make a turn. A red-and-amber phase still means stop; wait for a green signal or an applicable authorised green arrow.

🔗 gov.uk • Great Britain, Highway Code, light signals controlling traffic; 🔗 nidirect.gov.uk • Northern Ireland, official Highway Code, 2020 edition

Can a green light remove the need to give way to pedestrians in the United Kingdom?

No. A green signal is not a guarantee that the junction is empty. Check for people already crossing, vehicles completing a movement and any separate pedestrian, bicycle or turning signals. Do not enter if you cannot clear the junction safely.

🔗 gov.uk • Great Britain, Highway Code, light signals controlling traffic; 🔗 nidirect.gov.uk • Northern Ireland, official Highway Code, 2020 edition; 🔗 gov.uk • Great Britain, Highway Code, junctions and traffic signals

1 United Kingdom 2 Motorway 3 Speed limit 4 Bike path 5 Pedestrian warning 6 Bridge 7 Speed bump 8 Toll road 9 One-way traffic 10 Quay 11 Slope 12 Bus lane 13 Bus stop 14 Dead end 15 Stop sign 16 Give way 17 Roundabout 18 Road narrowing 19 Priority over oncoming traffic 20 Give way to oncoming traffic 21 Pedestrian crossing 22 Railway crossing 23 Mandatory direction 24 Turn prohibition 25 School area 26 Crossing animals 27 Slippery road 28 Rockfall 29 Aircraft 30 Curve 31 Chevron 32 Wrong-way driving 33 Roadworks 34 Height limit 35 Radar speed sign 36 Selective barriers 37 Low-emission zone 38 Priority at the next junction 39 Traffic lights 40 Traffic lights warning 41 Road markings 42 Climbing lane 43 Bike box 44 Left-hand traffic 45 Speed feedback 46 Driving licence 47 Cycling route 48 Parking 49 No parking 50 Park and ride 51 Disabled parking 52 Reversing 53 Detour 54 Road surface 55 Verge 56 Traffic calming 57 Horse riding 58 Emergency exit 59 City limit 60 Tourist attraction 61 Licence plate 62 Charging station 63 Dangers 64 Dip 65 Tram lane 66 Cyclist 67 Bus 68 Police 69 Ambulance 70 Roadway 71 Street 72 Pothole 73 Private road 74 Path 75 Particulates 76 Air pollution 77 Rush hour 78 Road code 79 Two-way traffic 80 Tram stop 81 Street gutter 82 Cargo bike 83 Forestry vehicle 84 Construction vehicle 85 Semi-trailer truck 86 Trolleybus 87 Speed pedelec 88 Delivery vehicle 89 Idling 90 Tow truck 91 Four-wheel drive 92 Passenger 93 Bicycle 94 Motorcycle equipment 95 Tram 96 Rail track 97 Public transport 98 Caravan 99 Trailer 100 Tow hitch ...