Traffic signsIreland
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.
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.

Traffic rules
Ireland
Priority signs
Warning signs
Prohibitory signs
Mandatory signs
Information signs
Additional signs