What’s the purpose of green-and-yellow fluorescent studs on a motorway?

Explanation: 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.

Category: Traffic Signs

References: Highway Code: Rule 132