Even perfectly adjusted mirrors leave a blind spot — an area directly to the side of your vehicle that no mirror can cover. On UK roads, that blind spot is frequently occupied by cyclists, motorcyclists, or pedestrians. Turning without checking it is one of the most dangerous faults a learner driver can make.
What Is a Blind Spot?
Your blind spot sits just behind your shoulder on each side — the area your peripheral vision and mirrors don't reach. When you turn left at a junction, a cyclist travelling along the kerb may have moved into that space without appearing in your left mirror. When you turn right, a motorcyclist passing on your outside may be invisible in your centre mirror.
The Correct Technique
A blind spot check is a physical head turn — not a glance in the mirror. Before turning left, turn your head to look over your left shoulder. Before moving right, look over your right shoulder. It takes less than a second and could prevent a fatal collision.
- Turn your head — don't just roll your eyes to the side.
- Check at the last moment before committing to the turn.
- If you see a cyclist, wait and give way before turning.
Why Learners Forget
Concentration demand is high at junctions — you're watching traffic, reading road markings, managing speed and steering. The blind spot check can get dropped when cognitive load peaks. The solution is to make it a physical habit that triggers automatically as part of the junction routine, not an optional extra.
Instructor's Tip
In the UK, especially in city centres and residential streets, cyclists are a constant presence. They often travel at 15–20mph and can appear quickly from behind. Always assume there is a cyclist in your blind spot until a physical check proves otherwise.
Frequently Asked Questions
- Is checking the mirror enough, or do I have to physically turn my head?
- You must physically turn your head. Mirrors cannot cover the full blind spot area. Examiners watch for a clear head turn before turns and lane changes.
- When exactly should I do the blind spot check?
- Check the blind spot just before you start the turning movement — after your mirror checks and signal, but right before the steering input begins.
- Do I need a blind spot check when changing lanes on a dual carriageway?
- Yes. The blind spot check is essential any time you move laterally, including lane changes on faster roads.