What does this sign mean?
Road narrows on the right at works.
Traffic on the right has to merge into your lane. Leave the gap rather than close it up.
Truck & Bus · Category CD
Truck and Bus Combined theory test
Both categories in one sitting.
140
questions
180 min
to answer them
104 of 140
to pass (74%)
€84
official test feeC, C1, CE, C1E, D, D1, DE, D1E
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Road signs
Learn the system, not just the pictures. Once you know what each shape and colour means you can read a sign you have never seen before — which is exactly what the test is checking. 222 signs can appear on the category CD test.
Shape and colour
Amber diamond
Warning — a hazard ahead. Ireland uses a diamond, not the red triangle used across most of Europe and in the UK.
Orange diamond
Warning at roadworks. Deliberately distinct from the permanent amber ones, so a temporary hazard stands out.
Red circle
Prohibition — you must not.
Blue circle
Mandatory — you must.
Octagon
Stop, and nothing else uses this shape.
Inverted triangle
Yield.
Blue rectangle
Information.
Red prohibits, blue compels. Getting that pair straight answers a large share of the sign questions on the test.
Direction signs
The colour tells you what class of road you are being sent onto — and therefore what its default speed limit is.
Blue
Motorway
Green
National roads (N-numbers)
White with black text
Regional and local roads
Brown
Tourist and heritage attractions
10 signs, quick quiz
1 of 10
Each sign as it stands on the road, and four meanings. Pick one — the meaning is what the test asks for, not the picture, and the wrong answers are real signs of the same kind.
What does this sign mean?
Hospital.
What does this sign mean?
Tram advisory speed.
An advisory figure, not a limit, but exceeding it on rails is how vehicles lose grip.
What does this sign mean?
Motorway ends ahead.
Expect the road to become a national road or dual carriageway, with a lower speed limit, junctions and slower traffic. The end itself is marked by the End of motorway sign.
What does this sign mean?
Keep left.
What does this sign mean?
Pedestrians cross to the left.
Orange marks a temporary arrangement. Expect people stepping off the kerb at the point the arrow indicates.
What does this sign mean?
Lay-by.
On a long drive this is where you take the 15-minute nap that actually treats fatigue.
What does this sign mean?
Quay or river bank.
What does this sign mean?
Free recovery.
Used where a broken-down vehicle is a danger to everyone, such as a tunnel or a motorway. The tow to a safe place costs you nothing.
What does this sign mean?
Axle weight limit.
The signs are drawn to the Traffic Signs Manual's designs, by us or from public-domain drawings on Wikimedia Commons; none is official artwork.The meanings are the book's; the wording of a question is ours.
In the app
Every sign in your pocket, and three ways to learn them.
Reading a list of signs is not the same as knowing them. The app makes you produce the meaning, which is what the test asks for.
The signs are drawn in the app, not photographed — the same shapes at any size, in the dark.
The whole library, and every sign turns over
Tap a sign for what it means and where you meet it — the meaning is the thing the test asks for, not the picture.
Set out in the groups the Irish sign guides use, and filtered by kind: warning, roadworks, regulatory, information, motorway
Search by name when you have seen one on the road and want it now
Works with no signal, which is most of the useful moments
The four meanings come from the same group, so the wrong ones are plausible, not silly.
Ten quick questions on what they mean
Recognising a sign and producing its meaning are different skills, and only one of them is tested.
Four meanings, one sign, drawn from the group you are looking at
Never asks you to tell apart two signs that are drawn the same
A score at the end and another ten whenever you want them
'Not yet' brings a sign back sooner; a sign known five times stays away.
Or flip through them like flashcards
The old way, because it works: sign, guess, turn it over, next.
The full list or just the group you picked
Swipe or use the arrows — one hand, one thumb
Good for the five minutes before you go in
One group of signs is free; the whole library comes with the unlock.