Signals by drivers and cyclists to other road users
You should give signals when this would help or warn other road users. Give only the correct signals - those illustrated - and only for the purposes described. Give them clearly and in good time. Always be sure that your direction indicator signals are cancelled after a manoeuvre.
Arm signals are for use when direction indicator signals are not used; or when necessary to reinforce direction indicator signals and stop lights. They are also for use by pedal cyclists.
You should only give signals to indicate your intentions to other road users. Never use them as instructions.
Do not drive or ride on the road until you know how to signal properly and what other people's signals mean.
Stop lights are red lights which come on at the rear of the vehicle when the driver puts on his brakes. They tell the road users following him that he is slowing down or stopping. They must not be confused with the rear lights which are also red.
Horns are for use as a warning of your presence or of danger to other road users. Never use them for any other reason.
Headlamp flashing is also a warning of your presence to other road users.
Bells are used by pedal cyclists as a warning.
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Signals by police officers and other authorised persons
Signals given by a Police Officer, Traffic Warden, Tunnel Officer or other authorized person take precedence over all traffic signs and traffic light signals. Use your common sense before relying on signals given by any other person.
At junctions when all traffic is stopped by a Police Officer or Traffic Warden, you must not filter to the left or right until he signals you to do so.
Two-tone horns and sirens, white, red or blue flashing lights are used by ambulances, fire engines or police and other authorized organizations in emergencies to warn of their presence and signal their right of way. Drivers must give way to emergency vehicles signalling their right of way.
