Traffic signsIreland

An introduction to the traffic rules and road signs of Ireland. Learn about driving, road safety and much more in our illustrated book, with answers to frequently asked questions.

For informational purposes only. Always follow official regulations. Some content and images were created with AI assistance.


Warning signs

A warning sign is a traffic sign that alerts drivers to a potential danger or change in road conditions ahead, giving them enough time to slow down and react safely. These signs warn about hazards such as sharp bends, pedestrian crossings, slippery surfaces, merging traffic, animals on the road, or upcoming intersections. Their purpose is not to forbid or command anything, but simply to prepare drivers for situations that require extra attention.


Stop and give way. Give way. Warning for a roundabout. Priority at the junction. Warning for merging traffic from the left. Priority at the junction. Warning for a curve to the left. Warning for a curve to the right. Warning for a sharp curve to the left. Warning for a sharp curve to the right. Warning for a double curve, first left then right. Warning for a double curve, first right then left. Warning for curves. Warning for a road narrowing. Warning for a road narrowing on the left. Warning for a road narrowing on the right. Warning for a road with two-way traffic. Warning for a danger with no specific traffic sign. Warning for a speed bump. Warning for a bad road surface. Warning for a dip in the road. Warning for a steep ascent. Warning for a steep descent. Warning for a tunnel. Warning for a movable bridge. Warning for a quayside or riverbank. Warning for traffic lights ahead. Warning for falling rocks. Warning for roadworks. Warning for loose chippings on the road surface. Warning for a slippery road surface. Warning for strong crosswinds. Warning for a height restriction. Warning for a weight restriction. Warning for an axle-load restriction. Warning for a width restriction. Warning for a divided road. Warning for two roads that merge. Warning for low-flying aircraft. Warning for cattle on the road. Warning for crossing deer. Warning for sheep on the road. Warning for children. Warning for pedestrians. Warning for a pedestrian crossing. Warning for cyclists. Warning for equestrians. Warning for tractors. Warning for trams. Warning for a railway crossing without barriers. Warning for a railway crossing with barriers.
How should I recognise hazard warnings in Ireland?

Typical permanent hazard warnings are yellow diamonds with black symbols, unlike Britain’s usual triangles.

🔗 revisedacts.lawreform.ie • Ireland, Traffic and Parking Regulations — articles 6–7, 19, 27A, 30; Road Traffic Act 2004 section10; Signs Regulations 2025

🔗 rsa.ie • RSA Rules of the Road — guidance, law date 1 March 2025; read with later amendments

🔗 irishstatutebook.ie • S.I.433/2025 — current Irish traffic-sign and road-marking descriptions

How should I react to a pedestrian warning in Ireland?

Reduce speed, look along both sides of the road and be ready to stop. The warning identifies a pedestrian hazard ahead; children, people with limited mobility or others may enter the road unexpectedly.

🔗 revisedacts.lawreform.ie • Ireland, Traffic and Parking Regulations — articles 6–7, 19, 27A, 30; Road Traffic Act 2004 section10; Signs Regulations 2025

🔗 rsa.ie • RSA Rules of the Road — guidance, law date 1 March 2025; read with later amendments

🔗 irishstatutebook.ie • S.I.433/2025 — current Irish traffic-sign and road-marking descriptions

Does a traffic-lights-ahead warning require an immediate stop in Ireland?

No. A warning sign is not an automatic STOP instruction and does not create a new numerical speed limit. Reduce speed when necessary, look for a queue or a concealed signal, and obey the traffic lights and any separate speed or stop signs.

🔗 revisedacts.lawreform.ie • Ireland, Traffic and Parking Regulations — articles 6–7, 19, 27A, 30; Road Traffic Act 2004 section10; Signs Regulations 2025

🔗 rsa.ie • RSA Rules of the Road — guidance, law date 1 March 2025; read with later amendments

🔗 irishstatutebook.ie • S.I.433/2025 — current Irish traffic-sign and road-marking descriptions

51. Warning for a railway crossing with barriers

This traffic sign indicates a warning for a railway crossing with barriers. It alerts drivers to an upcoming level crossing with gates or barriers that close when a train approaches. Drivers should be ready to stop when the barriers are down or flashing lights activate. Never attempt to cross when gates are closing or closed.

Warning for a railway crossing with barriers.

English • W 121 • Level crossing without flashing red signals. A railway level crossing without flashing red signals is ahead. Follow its signs and crossing arrangements; this warning does not alone specify whether a gate or barrier is fitted.

Sources

🔗 Commons.wikimedia.org
🔗 Roadguidelines.ie • Department of Transport • Traffic Signs Manual • W 121

SVG source: Government of Ireland – Department of Transport • Public domain • Original revision 2022-07-05. Wikimedia original unmodified.