Green reflective studs indicate which part of the road?

Green reflective studs are specifically designated to mark slip roads or lay-bys along the road. These areas are designed for vehicles to safely leave the main carriageway, typically for refueling, resting, or allowing faster vehicles to pass. The use of green studs helps drivers recognize these segments of the road, which are essential for safe travel by providing clear visual guidance, especially in low-visibility conditions.

In contrast, the other options represent different features of the road that use other colors for their reflective studs. Main carriageways are indicated by other colors that denote the primary driving lanes. Emergency stopping areas are typically marked with red studs, while roundabouts have their specific markings as well that do not include green reflective studs. Understanding the significance of these colors is crucial for safe navigation and adherence to road safety protocols in emergency response driving.