An underpass is a passageway that allows people or vehicles to go underneath a road, railway, or other obstacles. These structures are often used to improve safety by keeping pedestrians and cyclists away from busy streets. Underpasses can be found in parks, near schools, or at busy intersections, making it easier for everyone to cross without worrying about traffic. In addition to safety, underpasses can also enhance urban design. They can be decorated with murals or lighting, creating a more inviting atmosphere. Some cities even use underpasses to connect different areas, making it easier for residents to access places like shopping centers or public transportation.