When may a trailer be towed on a public road without a rear number plate?

1. A.When being towed by an agricultural tractor.
2. B.Never, a number plate must always be displayed.
3. C.When the tailboard is removed.
4. D.When carrying a load that overhangs the trailer.

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.