major metropolitan transit systems

Major metropolitan transit systems are organized networks that enable efficient movement within cities. They include buses, which are flexible and serve many routes; subways or metros, rapid trains operating underground or elevated for quick travel across urban areas; trams or streetcars, surface vehicles often running along tracks; and commuter trains connecting suburbs to city centers. These systems are designed to reduce traffic congestion, cut pollution, and provide accessible, reliable transportation for residents and visitors, supporting the city's economic and social vitality. Effective transit requires coordination of schedules, infrastructure, and services to meet diverse urban travel needs.