Irish Driver Theory Road Signs

This sign tells you that the maximum legal speed limit permitted for this section of road is 100 km/h.

This sign tells you there is a with-flow nearside bus lane ahead on the left – that is, one where the buses move in the same direction as the traffic to their right. The information plate tells the times when the bus lane is in operation. Only buses, taxis and cyclists may use the bus lane during those hours.

This sign gives advance warning of a sharp change of direction to the right. You should slow down as you approach the hazard.

This warning sign tells you that during roadworks there will be two-way traffic in operation ahead. Continue to drive with extra care.

This sign gives advance warning of a dangerous bend to the left. You may need to slow down and react to any changes in the traffic situation ahead.

This roadworks warning sign tells you that the nearside (left-hand) lane of three is closed up ahead. If you are in this lane you will need to move to the centre (middle) lane when it is safe to do so.

This sign gives advance warning of a T-junction ahead with a road of equal importance. You must give way to traffic already on the road you are joining.

This sign tells you that you must keep left. It is usually displayed at a traffic island in the centre of the road and also used on occasion to control traffic at roadworks.

This sign tells you that you are not permitted to make a U-turn. It is commonly displayed on approach to junctions on dual carriageways. Drivers should also be aware that U-turns are also not permitted anywhere there is a continuous white line along the centre of the road or on a one-way street.

This sign tells you there is a with-flow nearside bus lane ahead to the left. Only buses, taxis and cyclists may use the bus lane during the stated operational hours.

This sign gives advance warning that the road narrows on the left ahead. You should show caution and prepare to adjust your road position.

This roadworks warning sign tells you that the nearside (left-hand) lane is closed ahead. If you are in this lane you will need to move to the offside (right-hand) lane when it is safe to do so.

This sign gives advance warning of a series of dangerous corners ahead. You should slow down and react to any changes in the traffic situation.

This traffic control sign tells you that you may proceed with caution through road works.

This sign gives advanced warning of an unguarded level crossing ahead. This is a crossing without gates or barriers and you should cross it with extreme caution.

This sign tells you that you must keep right. It is usually found in a one-way system where the traffic is required to keep to the right and also used on occasion to control traffic at roadworks.

This sign gives advance warning of an unprotected area of water ahead. You should be cautious due to the extreme danger.

This sign tells you that there is an offside bus lane ahead on the right. Only buses, taxis and cyclists may use the bus lane during the stated operational hours.

This sign gives advance warning that the road divides ahead. You should prepare to move to the left.

This roadworks warning sign tells you that the offside (right-hand) lane of three is closed ahead. Drivers in the nearside or centre lanes should be aware that traffic may merge from the right.

This sign gives advance warning that the road is narrowing on both sides ahead. You should show caution and prepare to slow down.

This traffic control sign at roadworks means you must stop.

This sign gives advance warning of a railway crossing ahead that is protected by gates or lifting barriers. You should be prepared to stop and follow the required procedure.

This sign is displayed at a junction where you may not turn right.

This sign tells you that the maximum legal speed limit permitted for this section of road is 30 km/h. These signs are commonly found in slow zones in residential areas.

This sign indicates a with-flow offside bus lane on the right. Only buses, taxis and cyclists may use the bus lane during the stated operational hours.

This sign gives advance warning of a steep descent/downward slope ahead. You should react accordingly by adjusting speed and selecting the appropriate gear.

This roadworks warning sign tells you that the course of the road will return to the left ahead. This usually appears after a stretch where traffic was diverted to a right-hand lane.

This sign gives advance warning of two-way traffic ahead, with oncoming traffic in the opposite lane.

Together these two signs indicate that a detour has ended.

This sign gives advance warning of a hump in the road. You should adjust your speed accordingly.

This sign is displayed at a junction where you may not turn left.

This roadworks warning sign tells you that there may be traffic queues ahead, possibly due to temporary traffic lights at the works. Proceed with caution.

This sign tells you that you must drive on the left and not use the contra-flow bus lane day or night. A contraflow bus lane is one where the buses are going in the opposite direction.

This sign gives advance warning of a railway level crossing ahead protected by lights and barriers. The crossing may also have an audible warning alarm. You should be prepared to stop.

This roadworks warning sign tells you that the course of the road will divert to the right ahead.

This sign gives advance warning of a steep ascent/upward hill ahead. You should react by selecting the appropriate gear.

This sign gives advance warning sign of a tram crossing ahead. You should be prepared to stop and yield to the tram, if required.

This sign gives advance warning that there may be horses on the road ahead. You should show due regard for horses and their riders.

These signs tells you that parking is permitted in both directions, but only at the times shown on the information plate.

This sign is displayed at a junction where you must not turn right.

This sign tells you that you must drive on the left and not use the contra-flow bus lane day or night. A contra-flow bus lane is one where the buses are going in the opposite direction.

This sign gives advance warning of a dip or depression in the road ahead which may be hidden and could obscure your view of oncoming traffic. You should reduce your speed accordingly and be aware that overtaking is dangerous in these areas.

This roadworks warning sign tells you that traffic previously separated by the central reserve or an obstruction will revert to two-way traffic.