Global Urban Rail Transit Security System Market is projected to grow from USD 24.8 Billion in 2025 to USD 49.3 Billion by 2035, reflecting a compound annual growth rate of 8.7% from 2026 through 2035. The urban rail transit security system market encompasses a comprehensive suite of technologies and services designed to enhance safety and security across metro lines, subways, trams, and light rail systems. This includes solutions for threat detection, access control, surveillance, emergency response, and cybersecurity, aiming to protect passengers, staff, infrastructure, and rolling stock. Key drivers fueling this growth include the rapid urbanization and expansion of public transportation networks worldwide, increasing concerns over public safety and terrorism, and government mandates for robust security measures in critical infrastructure. The rising adoption of smart city initiatives, which integrate advanced security technologies into urban planning, further propels market expansion.