Modular, non-contact measurement system for track geometry and overhead contact line (catenary). It allows continuous monitoring during normal traffic or during new construction or maintenance work. It provides measurements of track geometry, rail profile and wear, waviness, and overhead contact line height and wear at speeds up to 300 km/h. Equipped with RTK GPS, 4G connectivity, remote control, a robust design for harsh conditions, and compliant with EN 13848 standards.