How do we Signal
Types of signals:
There are several signals we can give depending on what we are trying to tell the road users around us. They should be easily recognized by everyone and so you must stick to the ones found in the highway code. Signals should always be given in good time so that others can react safely to them.
By Indicator: In order to tell others in front and behind that you are turning left / right, changing lanes, overtaking or stopping at the side of the road (remember, is their view of you obscured?).
By Stop Lights: In order to warn following traffic that you are slowing down or stopping. They light up when you press the footbrake even lightly and so braking should be done early and progressively. This will give following traffic time to react safely.
By Arm: In order to give a signal when mechanical signals have failed or to reinforce an indicator or brake light if necessary. Do not signal mechanically and by arm as a matter of routine. A good example of where it would be useful is if you were the lead vehicle on the approach to a zebra crossing. An arm signal for slowing down would tell pedestrians waiting to cross that you were slowing down as they cannot see your brake lights. Pictures of all arm signals can be found in The Highway Code.
Flashing your lights or sounding the horn: In order to warn others of your presence. Some drivers will flash their lights to indicate for you to proceed. If another vehicle flashes their lights be sure of their intentions and that it is safe to proceed. Look for something else as a clue that gives away their intentions for example, they slow down, the flashing of lights alone is not enough.
Reverse Lights: In order to warn other road users that you are reversing. When reversing in busy areas for instance when parking, it is advisable to go into reverse as soon as possible having stopped. This will help others anticipate your intentions to park.
Hazard Warning Lights: In order to warn others, you are temporarily blocking the flow of traffic or to warn others you are braking suddenly on fast roads for example on the motorway. In order to warn of sudden braking, the lights should only be on briefly.