The fault library
How the test is marked4 faults shown
Observation & mirrorsGrade 3#1
No mirror check before turning left
Turning without checking your left mirror can cut across a cyclist on your inside — one of the most common Grade 3 faults.
Observation & mirrorsGrade 3#2
Emerging from a junction without looking
Pulling out of a side road without looking right, left and right again forces traffic on the main road to brake.
Observation & mirrorsGrade 3#3
Changing lanes without a blind-spot check
Mirrors don't show everything. A car can sit in your blind spot — changing lanes without a shoulder check is a dangerous fault.
Observation & mirrorsGrade 3#4
Not yielding to pedestrians crossing a side road
When you turn into a side road, pedestrians already crossing it have priority. Driving at them is a serious fault.