Correct answer: B. U-turn not permitted.
This sign tells you that you are not permitted to make a U-turn. It is commonly displayed on approach to junctions on dual carriageways. Drivers should also be aware that U-turns are also not permitted anywhere there is a continuous white line along the centre of the road or on a one-way street.
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.
Practise the full question bank free →