Windscreen Wipers
The windscreen wipers (control 2) maintain forward visibility in rain. They clear the outside of the glass — distinct from the Demister, which clears condensation on the inside. Visibility is central to safe response to the Slippery Road Sign.
Evidence note: Official NaTIS Section 3 numbered control.
evidence_strength: confirmed.
Purpose
Clear rain and dirt from the outside of the windscreen.
When used
In rain or when the windscreen is dirty or obscured.
Risks of incorrect use
- Poor forward visibility
- Smearing from worn blades
Question patterns
- “Which control performs function X?” — component identification.
- Distractor trap: Confusing the wipers (clear the outside) with the Demister (clears misting inside).
Ontology Windscreen Wipers [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