What is the raised rim at the edge of a street or sidewalk called?

The raised rim at the edge of a street or sidewalk is referred to as a curb. A curb serves multiple important functions, including defining the boundary between the roadway and the pedestrian walkway, providing a physical barrier that helps to manage drainage by directing water away from the street, and enhancing safety by preventing vehicles from encroaching on pedestrian spaces.

A curb is typically made of concrete and has a defined height, creating a noticeable distinction between the street and sidewalk. This structure is crucial for urban planning and design, as it enhances the safety and usability of public spaces for both vehicles and pedestrians.

The other options do not accurately define this structure. A bump might refer to any raised surface but does not specifically indicate a boundary; edge is a general term that lacks the specificity of its use related to streets or sidewalks; and a sidewalk barrier typically implies a more elaborate physical obstruction than a standard curb, often used for safety or separation but does not describe the common raised edge.