DTT Road Signs and Markings 1 — Questions and Answers
Question 1: What does a circular sign with a red border and white background generally indicate?
- A prohibition or restriction (Correct answer)
- A warning of a hazard ahead
- A mandatory instruction
- Information for road users
Correct answer: A prohibition or restriction
Circular signs with a red border on a white background are prohibitory or restrictive signs — they tell drivers what they must NOT do, such as no entry or speed limits.
Question 2: What shape are warning signs on Irish roads?
- Diamond
- Circle
- Triangle (Correct answer)
- Rectangle
Correct answer: Triangle
Warning signs in Ireland are triangular with a red border. They alert drivers to hazards or changed conditions ahead, such as bends, junctions, or pedestrian crossings.
Question 3: A yellow diamond sign on its own (blank) on an Irish road means what?
- You are on a priority road (Correct answer)
- You must give way
- Speed limit change ahead
- School zone ahead
Correct answer: You are on a priority road
A plain yellow diamond sign indicates that you are travelling on a priority road and have right of way over traffic joining from side roads.
Question 4: What does a broken white line down the centre of a road mean?
- You may cross it to overtake if safe (Correct answer)
- You must not cross it
- A cycle lane boundary
- Edge of the carriageway
Correct answer: You may cross it to overtake if safe
A broken white centre line may be crossed to overtake or turn, provided it is safe to do so and you have a clear view ahead.
Question 5: What does a continuous white line along the centre of the road mean?
- Do not cross or straddle it (Correct answer)
- Overtaking is permitted here
- You are entering a one-way street
- Road narrows ahead
Correct answer: Do not cross or straddle it
A continuous (solid) white centre line must not be crossed or straddled. It is used where overtaking is unsafe due to restricted visibility.
Question 6: Yellow box markings at a junction mean you must:
- Not enter the box unless your exit is clear (Correct answer)
- Stop before the box and wait
- Give way to pedestrians only
- Not park within 5 metres of the box
Correct answer: Not enter the box unless your exit is clear
You must not enter a yellow box junction unless your exit road is clear. The rule prevents gridlock by stopping vehicles blocking the junction.
DTT Road Signs and Markings 1
What does a circular sign with a red border and white background generally indicate?