Expected outcome / competence

Full and effective use of all mirrors fitted to the vehicle.

Mirrors must be checked carefully before signalling, changing direction or changing speed.

Mirrors – Signal – Manoeuvre (MSM) routine should be displayed effectively.

Assessment criteria (example = change direction)

Driving fault:

• Late use of exterior mirror before changing direction.

Serious fault:

• Did not use the exterior mirror before a significant change in direction.

Dangerous fault:

• Any situation brought about by the above serious neglect of using the mirrors, that resulted in actual danger to the examiner, candidate, and the general public or property.

Other faults:

• not using the exterior mirrors when essential
• using the mirrors but not reacting to the information
• not using the mirrors at all
• pulling up with no mirror checks
• increasing speed with no mirror checks
• late use of mirrors

The above is taken from The Driving Examiners Manual.
https://www.gov.uk/guidance/guidance-for-driving-examiners-carrying-out-driving-tests-dt1

Where appropriate it has been reformatted and edited so it only refers to the driving of ordinary cars (class b).