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Metro Santiago Line 3

PROJECT OF THE MONTH DECEMBER 2023 | Opening of the north-west extension of Line 3 Metro in Santiago de Chile.

End of September, the northwestern extension of Metro Santiago Line 3 has successfully been opened from Los Libertadores to Plaza Quilicura. This 3,8 km section of Metro Santiago de Chile has been constructed by the joint venture ETF – Colas Rail. VCE was requested to conduct validation test measurements on site on behalf of ETF – Colas Rail. The scope of these measurements was to verify the parameters that define the vibration mitigation behavior of each section of track, including the validation of the theoretical design parameters such as natural frequencies, excitation spectrum and insertion loss.

VCE performed validation tests at two intervals in Chile. The first measurement campaign focused on the natural frequency and transfer mobilities of various mass-spring systems, determined for loaded and unloaded track condition with artificial force impacts. The second measurement campaign focused on measurements of running trains.

The measurements included a quite detailed investigation of the mitigation measurement systems. ETF – Colas Rail are satisfied with the professionalism and excellence showed during the execution of the activities on site, meetings and reviews.


Santiago de Chile, Chile


Colas Rail


Vibration measurements