No Left Turn Sign
The no-left-turn prohibition forbids a left turn at the junction. The red ring/slash marks it as a ‘must not’ — the opposite of the blue Turn Left Ahead Sign command. See Road Sign Colour Code.
Meaning
You may not turn left here.
Required driver response
Continue straight or take a permitted direction; do not turn left.
Question patterns
- “What does this sign mean?” — recognition of meaning.
- “What must you do when you see it?” — required response.
- Distractor trap: reading the red-slashed arrow as a command to turn left (that would be the blue sign).
Ontology No Left Turn Sign [part-of] Regulatory Signs
Connections
- Regulatory Signs — part_of_topic, source: 2026-06-28
- Road Signs Signals and Markings — part_of_topic, source: 2026-06-28
- NaTIS Manual on Road Traffic Signs — derived_from_source, source: 2026-06-28