What can be the reason for heavy smoke coming out beneath sleeper coach(not fire)?
Last friday(22nd Jan). i was traveling in 12695, 3A. Train was speeding after leaving MAS on time. It was in good MPS and suddenly, i saw that, there was huge white smoke outside. Initially i though that, it might be dust. Train was still maintaining MPS. Very soon, there was rigorous breaking, and when i went to door to check it out. All, i could see was thick smoke coming from sleeper coach(to be precise, beneath the coach). Smoke was so strong that, one couldn't see anything beyond that coach. Train stopped, and slowly smoke also diminished. And then train ran normally without much issue. Hardly train...
more... halted for 5min for smoke to settle down. What might be the reason for this smoke.