What's the purpose of green-and-yellow fluorescent studs on a motorway?
- A They mark the lanes in a contraflow system
- B They separate the slip road from the motorway
- C They mark access points for emergency services
- D They separate the edge of the hard shoulder from the grass verge
Why this is the answer
Roadworks can involve complex lane layouts. Reflective green-and-yellow fluorescent studs are used to separate the lanes in a contraflow traffic system. As you approach roadworks, look for traffic signs giving you advance information, which may relate to the size or type of vehicle you're driving.
Why the other answers don't fit
- B
- They separate the slip road from the motorway — Slip roads are marked by green studs.
- C
- They mark access points for emergency services — Emergency access points have their own signs and gates.
- D
- They separate the edge of the hard shoulder from the grass verge — The hard shoulder's outer edge is not marked with studs at all.
Where this question comes from
The question, its options and the explanation are reproduced word for word from the DVSA revision question bank under licence. The licence requires them to appear unaltered, so we cannot reword them and neither can anyone else — that is why you will meet the same wording on other sites. Everything else on this page is written by Theory Hub: the explanation of why each wrong answer is wrong, the topic guide and the revision notes.
Asked in: Lorry & Bus (LGV/PCV)
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