The renewal of the subway cars of line M3 has started in 2016 and the first new Russian trains were in operation since January 2017. Older - almost 40 years old -trains were still on the track with duoblock wheels which were replaced by monoblocks during the renewal. In 2010, the old trains of line M2 were replaced by modern Alstom subway cars with monoblock wheels due to the increased noise and vibration problems. Population complains also increased regarding line M3. Meanwhile, line M3 has also declined dramatically and began to be reconstructed intermittently from 2017. We performed noise and vibration measurements in several residential houses and in a hospital building before and after the renewal of the trains. According to the results of the measurements, the noise and vibration emission of the renovated trains are higher than the old ones. Therefore, regulation limits were defined before the reconstruction in order to meet the limit values laid down by law. Reconstruction of the track will completely replace the rails and new, softer rail pads will be installed at different sections due to vibration protection. After the reconsruction monitoring noise and vibration measurements will be carried out to assess the adequacy of vibration protection. The difference between monoblock and duoblock wheels and the resulting noise and vibration emission values will be shown in the presentation. Moreover, the estimations based on measurements and the different types of wheels and their expected noise and vibration levels after the reconstructed track in the protected buildings are also will be presented.
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