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2 Answers
- Anonymous1 decade agoFavorite Answer
Those are coal cars and are made to rotate when they unload them.
It is a neat process but in order for it to work, a car must be able to rotate without the car next to it turning so the end with a stripe is the one with a rotary coupler.
Some rotatry trains have a special car in the middle with a double stripe, both onds of that car have ortary couplers, those trains are for facilities where the entire train does not fit the baloon track and needs to be split.
Source(s): RR employee - 1 decade ago
"'TNM' series coal hoppers have one end painted yellow. This is because the knuckle on that end spins 360 degrees on a rounded drawbar."
Source(s): http://www.alaskarails.org/fp/Hoppers.html
