Curb

A curb is a raised edge or border along the sides of a sidewalk, street, or road, typically made of concrete or stone. Its purpose is to define the boundary between the roadway and pedestrian areas, helping to control drainage, prevent vehicles from encroaching onto sidewalks, and provide a physical barrier for safety. Curbs also help in guiding traffic and facilitating proper water runoff management, ensuring that rainwater flows into designated drainage systems rather than spreading across roads and sidewalks.