Military slang. Eject from a fighter aircraft. Modern ejector seats are mounted on a set of vertical rails, with a rocket or explosive charge to propel it upward and out of the cockpit.
"There were flames all around me, I couldn't even see the horizon, so at 420 knots, 8,000ft I had no choice but to grab the handle and ride the rails."
In some remote locations especially remote access Reservations, where there is no designated stop the travelers will tie a white cloth further up the line to let the Engineer know the want to board, give the train enough time to stop.
Also, train-Hop
To illegally board a box car to ride across the country by 'hopping' onto a moving train.
Also;
Tight steering control and maneuvering at high speed