Reflective amber studs on a motorway are found on the right-hand edge of the main carriageway, next to the central reservation (the strip of land separating the two directions of traffic). They mark the boundary between the right-most motorway lane and the central reservation and serve as a visual guide for drivers, especially in low visibility conditions like at night or during fog.
Key points about amber reflective studs on motorways:
- They indicate the edge of the carriageway closest to the central reservation.
- They help keep drivers in the right-most lane away from the central reservation.
- They are part of a colour system of reflective studs on UK motorways including white (lane markings), red (left edge), green (slip roads and lay-bys), and green/yellow (temporary lane layout changes).
This placement and function of amber studs are established in the UK's Highway Code and are a standard road safety feature on dual carriageways and motorways.
