General Warning Signs
The other warning signs are used to give information regarding upcoming hurdles or the movement of other things like animals, cyclists or a sudden change ahead like slippery road or sudden dip which might not get noticed through eyes only so that you can take the necessary precautions and do not fall into some mishappening.
Drive on left
A reminder, aimed mainly at visiting drivers, that traffic in Ireland drives on the left-hand side of the road.
Safe height plate
Shows the safe headroom for vehicles passing under a bridge or other overhead structure ahead.
Low flying aircraft
Warns that aircraft may fly low over the road ahead, usually near an airfield or airport.
Road divides
Warns that the road ahead divides around a central island or median, with traffic in each direction kept separate.
Merging/diverging traffic
Warns that traffic from a slip road or another lane will merge with, or split from, the main road ahead.
Dual carriage ends
Warns that the dual carriageway ends ahead and the road becomes a single carriageway with two-way traffic.
Traffic crossover ahead
Warns that traffic ahead will be diverted across the central reserve to the other carriageway, often because of works or an incident.
Overhead electric cables
Warns of overhead electric cables crossing the road ahead with limited clearance.
Traffic signals ahead
Warns of traffic lights ahead that may not be visible yet, such as after a bend or crest.
Pedestrian crossing ahead
Warns of a pedestrian crossing ahead where people may be crossing the road.
Slippery road ahead
Warns that the road surface ahead may be slippery, for example from wet, oily, icy or loose conditions.
Road narrows on both sides
Warns that the road ahead becomes narrower from both sides.
Road narrows from left
Warns that the road ahead narrows, with the left-hand edge coming in.
Road narrows from right
Warns that the road ahead narrows, with the right-hand edge coming in.
Tunnel ahead
Warns that the road enters a tunnel ahead.
Cyclists
Warns that cyclists are likely on or crossing the road ahead, for example where a cycle route joins.
Start of a passing lane
Warns that a passing lane starts ahead, giving traffic in your direction an extra lane for overtaking.
Lane loss
This warning sign means the right-hand lane ends ahead and traffic must continue in the remaining lane. It is used before the road markings taper from two lanes to one.
Start of a climbing lane
Warns that an extra uphill lane starts ahead, so slower vehicles can keep left while others pass on the hill.
Loop road ahead
Warns that the road ahead loops round on itself, turning back in a tight circular curve.
Sharp dip ahead
Warns of a sharp dip in the road ahead, where the surface drops and rises again over a short distance.
Series of bumps or hollows ahead
Warns of a series of bumps or hollows in the road surface ahead.
Sharp rise ahead
Warns of a sharp rise in the road ahead, such as a hump-back bridge, which can hide oncoming traffic.
Wild animals ahead
Warns that wild animals, such as deer, may cross the road ahead.
Sheep
Warns that sheep may be on or crossing the road ahead, common in upland and unfenced areas.
Cattle and farm animals
Warns that cattle or other farm animals may be crossing or herded along the road ahead.
Accompanied horses and ponies
Warns that ridden or led horses and ponies may be on the road ahead.
Crosswinds
Warns that strong crosswinds may hit vehicles on the road ahead, often on exposed stretches or bridges.
Steep descent ahead
Warns of a steep downhill section ahead.
Steep ascent ahead
Warns of a steep uphill section ahead.
Danger of falling rocks
Warns that rocks may fall onto or be lying on the road ahead from a cliff or rock face.
Unprotected quay, canal or river
Warns that the road ahead runs to the edge of a quay, canal or river with no barrier to stop vehicles going into the water.
Level crossing ahead, guarded by gates or lifting barrier
Warns of a railway level crossing ahead that is protected by gates or lifting barriers.
Level crossing ahead, unguarded by gates or lifting barrier
Warns of a railway level crossing ahead that has no gates or barriers to stop traffic.
Level crossing ahead with lights and barriers
Warns of a level crossing ahead that is controlled by warning lights and barriers.
Stop when lights are red
Instructs drivers to stop at the crossing when the red lights are showing.
Automatic level crossing ahead
Warns of an automatic level crossing ahead where barriers and lights operate automatically when a train approaches.
Chevron board
Marks a sharp change of direction to the left at a bend or junction.
Chevron board
Marks a sharp change of direction to the right at a bend or junction.
Uneven road
Warns that the road surface ahead is uneven, with bumps or rough patches.
Mini-roundabout ahead
Warns of a mini-roundabout ahead, where the central island is small and may be only painted on the road.