Turn signalsUnited 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.
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167. Turn signals
Turn signals, also called direction indicators, are flashing lights used to communicate a driver's intention to turn or move laterally, such as when changing lanes. They normally flash on the side towards which the vehicle intends to move.
Turn signals should be activated early enough to give other road users useful warning and should be cancelled once the intended movement has been completed. Signalling does not itself give the driver priority or make an unsafe manoeuvre permissible.
Wikimedia.org • Ehsnils • CC BY-SA
How should British drivers time their indicators?
Clearly and early enough to help others, without misleading them.
Does indicating give British drivers priority?
No. Signalling announces intention; it does not grant priority.
When should British drivers cancel indicators?
After use, so they do not confuse others.
How should British drivers signal a stop just beyond a side road?
Wait until passing the side road before indicating, to avoid suggesting a turn.
Can British drivers rely solely on another vehicle’s indicator?
No. It may have been left on; proceed only when satisfied it is safe.
May British drivers reinforce indicators with arm signals?
Yes, where necessary to make their intentions clearer.

Traffic rules
United Kingdom