Motorway rules
What do green reflective road studs mark on a motorway?
- The central reservation
- The left edge of the main carriageway
- The edge of the carriageway at lay-bys and slip roadsCorrect
- A closed lane
Why?
Green studs highlight where traffic joins or leaves. Rule 132 of The Highway Code says green studs mark the edge of the main carriageway at lay-bys and slip roads, helping you see where a junction begins and ends.
Highway Code rule 132