Singapore Mass Rapid Transit

Noise and vibration monitoring for a very busy mass transit system

The Singapore Mass Rapid Transit (MRT) system sees over 3.4 million daily riders and stretches across the country’s main island. The Circle Line, an orbital route linking the MRT’s radial routes, underwent track system upgrades to replace its double fastclip system with low-stiffness fasteners. RWDI was brought in to assess the acoustic and vibrational impacts. Through in-tunnel monitoring of noise, vibration, and rail deflection, alongside surface-level surveys near residential areas and control points, RWDI delivered comparative data before and after installation. These insights supported a clear evaluation of system performance and ensured minimal disruption to nearby communities.