How to Do a Proper Shoulder Check While Driving

A proper shoulder check is part of a sequence, not an isolated action. The correct order before any lane change or merge is: check your centre mirror, check your relevant side mirror, signal your intention, then do the shoulder check over the correct shoulder, then move if clear.

Many new drivers think a slight glance to the side counts as a shoulder check. It does not. Your head should turn approximately 90 degrees, enough that you are genuinely looking over your shoulder into the area beside and slightly behind your vehicle. This is the zone your mirrors cannot show. Anything less than a genuine 90-degree turn will not capture the blind spot and will likely be marked by an examiner as an incomplete check.

When turning left, changing to the left lane, or pulling away from a right-side curb, look over your left shoulder. When turning right, changing to the right lane, or merging right, look over your right shoulder. The check should be in the direction of the movement you are about to make.

The shoulder check should happen just before you actually move the wheel to begin the lane change. If you check, then wait 5 seconds before moving, the check is already outdated. The vehicle that was clear may have moved into your blind spot. The signal goes on before the shoulder check; the shoulder check happens in the final moment before you steer.

These are the shoulder check errors that most frequently cost students marks on road tests.