Irish Road Traffic Signs

Regulatory Signs

This section includes the signs that show a road regulation is in place. These must be obeyed. Regulatory signs show the course a driver must follow and an action they are required to take or forbidden to take. They are generally circular and have a red border and black symbols or letters on a white background. Mandatory regulatory signs that indicate the direction traffic must take at junctions are blue and white.

Mandatory signs at junctions

(white and blue)

Manual traffic control sign at roadworks

Bus and Tram Lanes

Traffic lane control signs in a tunnel

Motorway Signs

Warning Traffic Signs

Junction ahead with roads of less importance

(the latter being indicated by arms of lesser width)

Junction ahead with a road or roads of equal importance

General purpose warning signs

Tram signs

Other Common Signs

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