ABS reflective road studs are small reflective devices that are installed on road surfaces to improve road safety, particularly at night or in low visibility conditions. ABS refers to the material used to manufacture the road studs, which is a type of plastic that is strong, durable, and resistant to impact and weather. The studs are designed with a slightly convex shape and are typically available in a red colour. The reflective surface of the road stud is made of a series of small reflectors that reflect light from vehicle headlights, making the road markings more visible to drivers.