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Truck theory test
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Truck theory test questions, Ireland
Preparing for the official Irish Driver Theory Test? Practise 909 real-style questions for this category: by topic, in 20-question rounds, or as a full timed mock exam in the exact official format.
Every question comes with a clear explanation, and you can study in your own language with the English original alongside. The real exam screen shows English, so you learn both.
Sample questions from the real bank
Tap a question to see the correct answer and the explanation.
+When should rear fog lights be used?
Correct answer: In dense fog or falling snow.
Explanation: A driver must only use rear fog lights in dense fog or falling snow. Using fog lights in normal road and weather conditions can dazzle or blind following motorists. Also, fog lights may make brake lights harder to see.
+Why should ropes not be used to tie down a load of steel girders?
Correct answer: Because they may wear and snap.
Explanation: Sharp edges on steel girders can cause the ropes to fray and snap, with the result that a load becomes insecure. If a load has sharp edges, drivers should use web straps with suitable sleeves to protect the webbing from the sharp edges.
+What should a driver do if the vehicle’s windows and mirrors are covered in ice?
Correct answer: Switch on the heating system and use a scraper to clear the ice before driving.
Explanation: Make sure all the windows and mirrors are completely clear of ice so that the driver can safely observe road and traffic conditions all around. This is especially important when driving in slippery conditions. It is good practice to carry a can of de-icer in the vehicle and, if possible, to fill the washer reservoir with a de-icing agent.
+What determines the maximum allowed towing capacity of a vehicle?
Correct answer: The manufacturer’s specifications.
Explanation: The maximum weight that your vehicle can safely tow is specified by the manufacturer and is usually set out in the driver's handbook for the vehicle and, in some cases, on a plate attached to the vehicle. This is the safe towing limit for the vehicle, and you should not exceed it.
+What should a driver do if there is very heavy traffic congestion in a tunnel?
Correct answer: Switch on hazard warning lights.
Explanation: If there is traffic congestion in a tunnel, you should switch on hazard lights and remain patient. Keep a safe distance from the vehicle in front, even in slow-moving traffic. Listen for traffic messages on the tunnel radio station, if available.
+On a downhill gradient, which of the following effects will gravity have?
Correct answer: Increase stopping distances.
Explanation: On a downhill gradient, gravity makes the vehicle’s speed increase, therefore stopping distances and the braking effort required to slow the vehicle are also increased.
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Keep reading
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Signs are the biggest single topic in the test. The road signs reference lists every sign and marking with its official meaning, and there is a free signs quiz if you would rather be tested than read.