Reflective studs between motorway lanes are white.

These "cat's eyes" help drivers stay in their lanes during poor visibility, like fog or night driving, by bouncing headlights back. They're placed along lane divisions on dual carriageways and motorways, as outlined in UK Highway Code Rule 132.

Stud Colours Explained

Different colours mark specific areas for safety:

  • White : Between lanes on the same carriageway – keeps traffic flowing straight.
  • Red : Left edge, between hard shoulder and first lane – don't cross!
  • Green : Between main motorway and slip roads – watch for merging/exiting vehicles.
  • Amber : Right side by central reservation – separates opposite traffic.

Imagine cruising the M25 at dusk; white studs suddenly glow, guiding you like runway lights on a pitch-black airstrip.

Quick Quiz Check

Theory tests often ask this: "What colour are the reflective studs between the lanes on a motorway?" Answer: White. Green is for slip roads only – a common mix-up!

Location| Colour| Purpose
---|---|---
Between lanes| White| Lane separation 1
Slip road join| Green| Junction alert 3
Left edge| Red| Hard shoulder boundary 5
Central reserve| Amber| Opposite lanes divider 9

TL;DR : White for between lanes; know your colours to ace the test and drive safe.**

Information gathered from public forums or data available on the internet and portrayed here.