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A blue circular sign with a white arrow curving to the left.
regulatory

Keep left

You must pass to the left of the obstruction or island.

What it means in practice

Blue circular signs with white arrows are mandatory, not advisory. Failure to comply with a keep left or keep right sign carries a 60 euro fixed charge and 1 penalty point.

Description

A blue circular sign with a white arrow curving to the left.

mandatoryislandlane

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

  • What does this sign mean?

    Road signs · easy

Practise sign questions

Other regulatory signs

A Techvora tool · techvora.net

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.