It’s essential to check you’re using your mirrors correctly at all times. This means always using your mirrors: before you move off to check it’s safe to pull out into traffic; before you signal to check you won’t confuse a driver behind you; before any change of direction including turning, overtaking and changing lanes; before any change in your speed to make sure other drivers have time to react; before you do anything that could interfere with what other road users are doing. Remember side mirrors are convex (curved outwards) so things look further away than they actually are. As a general guideline, try to use your mirrors every five seconds. Say to yourself ‘1-2-3-4-5 mirrors check’.