Road narrowingIreland

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.


17. Road narrowing

A road narrowing is a section where the available width of the road or carriageway becomes smaller. The narrowing may occur on both sides, on one side only, or because one or more traffic lanes end.

Drivers should reduce speed, observe approaching and adjacent traffic, maintain sufficient lateral clearance and merge when necessary. Warning signs do not always determine priority, so drivers must follow any priority signs, lane markings and local traffic rules.

Road narrowing
'Caution Trains Operating' sign beside a narrow road. (Ireland)
Wikimedia.org • William Murphy • CC BY-SA
What does a road-narrowing warning mean in Ireland?

Ireland’s warning signs identify a narrowing roadway. The RSA uses warning signs to describe hazards, while regulatory controls and the applicable meeting rules determine who can proceed.

🔗 revisedacts.lawreform.ie • Ireland, Traffic and Parking Regulations — articles 7, 18, 26–27, 33; RSA safe merging and lane use

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

Warning for a road narrowing. Warning for a road narrowing.

English • W 071 • Road narrows on both sides. The carriageway narrows on both sides ahead.

Sources

🔗 Commons.wikimedia.org
🔗 Roadguidelines.ie • Department of Transport • Traffic Signs Manual • W 071

SVG source: Government of Ireland – Department of Transport • Public domain • Original revision 2021-08-30. Wikimedia original unmodified.

Warning for a road narrowing on the left. Warning for a road narrowing on the left.

English • W 070L • Road narrows on the left. The carriageway narrows on the left ahead.

Sources

🔗 Commons.wikimedia.org
🔗 Roadguidelines.ie • Department of Transport • Traffic Signs Manual • W 070L

SVG source: Government of Ireland – Department of Transport • Public domain • Original revision 2021-08-30. Wikimedia original unmodified.

Warning for a road narrowing on the right. Warning for a road narrowing on the right.

English • W 070R • Road narrows on the right. The carriageway narrows on the right ahead.

Sources

🔗 Commons.wikimedia.org
🔗 Roadguidelines.ie • Department of Transport • Traffic Signs Manual • W 070R

SVG source: Government of Ireland – Department of Transport • Public domain • Original revision 2021-08-30. Wikimedia original unmodified.

Does a narrowing warning give you priority in Ireland?

No. A warning describes the reduced width, rather than allocating priority or setting a numerical speed limit. Follow any separate priority signs, signals and meeting rules, and slow enough to pass safely or wait before entering.

🔗 revisedacts.lawreform.ie • Ireland, Traffic and Parking Regulations — articles 7, 18, 26–27, 33; RSA safe merging and lane use

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

What should you do if traffic lanes merge at a narrowing in Ireland?

Read the lane-ending signs and markings, check surrounding traffic and signal any lane change as required. Apply the local merging rule and enter only when safe. Do not assume the driver in an ending lane always has priority, or confuse merging with meeting oncoming traffic.

🔗 revisedacts.lawreform.ie • Ireland, Traffic and Parking Regulations — articles 7, 18, 26–27, 33; RSA safe merging and lane use

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

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