<p>Bengaluru’s Namma Metro is considered to be the cleanest mode of transport in the city. Most of us cannot spot the difference between a new train and an old train. </p><p>Like many of you, we were also curious to know how BMRCL keeps their trains so clean. So we landed up at a cleaning facility to learn more. </p><p>Watch the full video to see the step-by-step process of deep cleaning Namma Metro train, exclusively for you.</p>