A crosswalk is a marked area on a roadway designated for pedestrians to cross safely. Crosswalks may be at intersections (controlled by traffic signals or stop signs) or mid-block (sometimes with pedestrian-activated signals). Drivers must yield to pedestrians in crosswalks. Crosswalk markings, lighting, and signage are designed to increase visibility and safety. Municipal traffic engineering determines crosswalk placement based on pedestrian volumes, traffic speeds, sight lines, and safety considerations. Requests for new crosswalks are common constituent concerns. Some communities use enhanced crosswalk treatments (raised crossings, different materials, lighting) in high-pedestrian areas. Proper crosswalk use and driver yielding are essential for pedestrian safety.