Tibet trains rolling stock information:
25G rolling stocks used
25.5m long
120 top speed allowed
140 can go
Disc...
more... & flange braking system
AAR coulings
.
It is similar with vande bharat where coaches were attached and both coaches were attach in that manner that no air can pass in it
Hence no reduction in speed by air
Having double layer windows too not as metro where when 2 trains surpass each other both metro coaches windows feels shaky