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A circular sign with a red border showing a left-turn arrow crossed by a red diagonal line.
regulatory

No left turn

Turning left at this point is prohibited.

What it means in practice

A black left-turn arrow inside a red circle crossed by a red diagonal bar. Failure to comply with a prohibitory traffic sign carries a 60 euro fixed charge and 1 penalty point.

Description

A circular sign with a red border showing a left-turn arrow crossed by a red diagonal line.

prohibitionturning

Sources

  • Rules of the Road · Road Safety Authority · Edition reflecting road traffic law as at 1 March 2025
    Last checked 2026-09-08

Questions that use this sign

  • You are in the left of two lanes at a junction and see this sign facing you. What should you do?

    Road signs · hard

Practise sign questions

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Independent learning application. Not affiliated with the Road Safety Authority or the official Driver Theory Test service. TheoryLane questions are written by TheoryLane from published Irish road-rule sources.