Correct answer: B. 80 km/h.
When towing a trailer on a national road, it is illegal to exceed 80 km/h – exceeding this speed will make the vehicle unstable.
This is an official-style question from the Legal Matters & Rules of the Road topic of the Ireland driver theory test (Cat. B). Practise all 807 questions free on iTest.ie — with timed mock exams, automatic mistake tracking and progress sync across devices.
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