What color reflective studs are expected at the nearside of a motorway or edge of a carriageway?

The reflective studs that are located at the nearside of a motorway or the edge of a carriageway are red. This color is specifically designated to indicate the left-hand edge of the road, helping drivers to understand their positioning, especially in low visibility conditions or at night. Red studs serve as a clear visual cue that alerts drivers they are nearing the edge of the carriageway. Different colors are used for other purposes; for instance, white studs indicate lane division, while green studs are used for indicating pedestrian crossings. Amber studs are often used to denote areas where the road changes direction or for temporary road conditions. Understanding these color codes is essential for safe navigation on motorways and roadways, as they help reinforce safe driving practices and maintain awareness of road boundaries.