You must then pull over and stop as soon as it is safe to do so.

directing you to pull over to the side by pointing and/or using the left indicator.

flashing blue lights or headlights or sounding their siren or horn, usually from behind.

If police in a vehicle want to stop your vehicle, they will, where possible, attract your attention by: You must obey signals given by police officers and Driver and Vehicle Agency Enforcement Officers (see ' Signals by authorised persons') and signs used by school crossing patrols.

be aware that an indicator on another vehicle may not have been cancelled.

watch out for signals given by other road users and proceed only when you are satisfied that it is safe.

remember that signalling does not give you priority.

use an arm signal to emphasise or reinforce your signal if necessary.

your brake lights will warn traffic behind you that you are slowing down.

if you signal earlier it may give the impression that you intend to turn into the road.

make sure your signals will not confuse others - if, for instance, you want to stop after a side road, do not signal until you are passing the road.use them to advise other road users before moving off, changing course or direction or stopping.

give clear signals in plenty of time, having checked it is not misleading to signal at that time.Signals warn and inform other road users, including pedestrians (see 'Signals to other road users') of your intended actions. Always give way if it can help to avoid an incident. The rules in The Highway Code do not give you the right of way in any circumstance, but they do advise you when you should give way to others. This section of the Highway Code for Northern Ireland should be read by all drivers, motorcyclists, cyclists and horse-riders.

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