Demister
The demister clears misting on the inside of the glass, complementing the Windscreen Wipers that clear the outside. It is not in the official Section 3 numbered list, so it is tagged alleged.
Evidence note: Tested under Rules of the Road, not the official Section 3 controls list.
evidence_strength: alleged.
Purpose
Clears condensation/mist from the inside of the windscreen and rear window.
When used
When the glass mists up in cold or humid conditions.
Risks of incorrect use
- Reduced visibility from misted glass
Question patterns
- “Which control performs function X?” — component identification.
- Distractor trap: Confusing it with the Windscreen Wipers (which clear the outside).
Ontology Demister [part-of] Vehicle Controls
Connections
- Vehicle Controls — part_of_topic, source: 2026-06-28
- NaTIS Learner Driver Manual — derived_from_source, source: 2026-06-28