Irish Driving Test Theory

These are some common theory questions that will come up on your upcoming driving test in Ireland.

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Last updated: October 30, 2022

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First submitted	October 30, 2022
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	Question	Answer
1.	What do you check before starting the engine?	Handbrake on, Gears are in neutral, Doors closed properly, Seat and steering wheel set correctly, Mirrors are positioned correctly and you and passenger have seatbelts on.
2.	When should you use the car's horn?	Only to warn other road users of an oncoming danger or to make them aware of your presence for safety reasons.
3.	What does a broken white line crossing the left hand lane mean?	This is a yield line. You must give right-of-way to any traffic on the major road ahead.
4.	How should you position yourself for turning right on a one-way street?	You should drive as close as you safely can to the right hand side of the one-way street.
5.	Who cannot use a motorway?	People who do not hold a full license for the vehicle they are driving, vehicles incapable of at least 50kmh, cyclists, pedestrians.
6.	How far back is a safe distance to drive behind another vehicle?	Allow a 2 second gap, double it if the road is wet.
7.	What does the island in the middle of a pedestrian crossing mean?	Each side of the island is a separate crossing.
8.	When can you cross a continuous white line?	To avoid an obstruction.
9.	What does a broken yellow line mean?	It marks the edge of a road.
10.	If dazzled by the lights of an oncoming vehicle, what should you do?	Slow down and stop if necessary.
11.	At traffic lights, what does a flashing amber light mean?	Yield right of way to pedestrians.
12.	What is the basic rule of a yellow box junction?	You cannot stop in the box, unless you are waiting to turn right into a clear road and are not obstructing oncoming traffic.
13.	Who has priority at a road junction, crossroad or roundabout?	Traffic to the right, traffic already in the junction and pedestrians.
14.	In what situations should you use dipped headlights?	When meeting oncoming traffic. On continuously lit roads. When following close behind another vehicle. In snow or fog. During the day.
15.	Where should you not park?	Near a bend, less than 5m from a junction, more than 1/2 a metre from the kerb, opposite another vehicle on a narrow road, in an operational bus or cycle lane, a bus stop or taxi rank, blocking a gate or driveway, obscuring a sign.
16.	What is the maximum motorway speed limit?	120kmh
17.	Where should you not overtake?	Approaching a bend, a junction, a pedestrian crossing, the brow of a hill or a hump-backed bridge, at a continuous white line or anywhere that your view is restricted.
18.	What is the minimum tyre thread depth?	1.6mm
19.	Starting with green, what is the sequence of traffic lights?	Green, Amber, Red (Flashing amber would occur at a pedestrian crossing)
20.	What does a single yellow line mean?	No parking at the times specified on the nearby information plate.

	Question	Answer
21.	What does a double yellow line mean?	No parking at any time.
22.	Which lane should you normally use on a motoryway?	Given the choice of lanes you would normally drive in the left lane.
23.	Why would you use the outside lane on a motorway?	To overtake or to accommodate traffic merging from the left. Once finished you should move back into the left lane.
24.	If you break down on a motorway, what should you do?	Hazard lights, move as far left into the hard shoulder as possible, get out on passenger side and wait on the embankment, ring the guards, use a warning triangle if you have one.
25.	What does a red light mean?	Stop before the stop line or before the light.
26.	What does a green light mean?	Go if safe to do so.
27.	What does an amber light mean?	Stop if safe to do so.
28.	What does a green arrow mean?	Traffic going the specified direction can go, assuming it is safe.
29.	When can you overtake on the left?	When the vehicle in front of you is turning right, when you intend on turning left, when the vehicles in the lane and your right are moving more slowly than you.
30.	At an uncontrolled junction of equal importance, to whom would you give way?	Yield to traffic on your right and traffic already turning.
31.	What is a clearway?	A road where stopping and parking are prohibited during certain times.
32.	Name three people in authority whom you must stop for?	A guard, a school warden, a person in charge of animals.
33.	If you wish to turn right from a minor road onto a dual-carriageway which has a wide central median, what should you do?	Drive onto the median slip when the nearest carriageway is clear. Then wait for a gap in traffic from the left, before proceeding.
34.	What should you do when you wish to turn right onto a dual-carriageway which has a narrow central median?	You should wait on the side road until there is a suitable gap in the traffic in both directions.
35.	Where should you position yourself when you are driving on a one-way street and intend on turning right?	Try drive close to the right-hand side of the road.
36.	If you are driving on a primary road which is not marked by a central dividing line, what should you do?	Imagine where it would be and drive on the left-hand side.
37.	When you see children just ahead on the road, what should you do?	Give them a wide clearance and be prepared to slow down if necessary.
38.	What is the correct position for a vehicle when turning right	Just left of the centre of the road.
39.	You see a vehicle with blue flashing lights approaching. What should you do?	You may move to the left and reduce speed, stopping if necessary.
40.	When may you pass another vehicle on the left-hand side?	You may pass on the left if the vehicle in front is signalling to turn right or in slow moving lanes or traffic.