DTT Study Guide 2026
Everything you need to pass the DTT exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📚 DTT Topics to Study (51)
✍️ Sample DTT Questions & Answers
1. What is the 'Dutch courage' effect of alcohol in terms of driving risk?
The 'Dutch courage' effect describes alcohol increasing risk-taking behaviour while simultaneously reducing the physical and cognitive ability to handle those risks — a deadly combination in driving.
2. What does a sign showing a red circle with a '30' inside mean?
A red-bordered circle with '30' inside is a mandatory maximum speed limit sign. No vehicle may exceed 30 km/h in that zone.
3. How should you use your headlights when driving into a low winter sun?
In low sun conditions, use dipped headlights even in daylight. While you may find it hard to see due to glare, dipped headlights help oncoming drivers see your vehicle against the bright background.
4. What should you look for when carrying out a visual walkaround check of a vehicle?
A walkaround check involves inspecting tyres (inflation and damage), all lights, fluid leaks under the vehicle, bodywork for damage, and any secured loads. This should be done before every journey.
5. You are driving along and a bus has stopped at a bus stop. The bus indicates to pull out. What should you do?
In Ireland, drivers must give way to buses pulling out from bus stops where a 'yield to buses' sign is displayed. Even without a sign, giving way is the safe and courteous action.
6. A speed limit sign showing '30' in a red circle in Ireland means:
A speed limit in a red circle is a mandatory restriction — it is illegal to exceed that limit on that road.