Some articles on trains, train:
... Trains moving in opposite directions on the same track cannot pass each other without special infrastructure such as sidings and switches that allow one of the trains to move ... Initially the only two ways for trains to arrange such interactions was to somehow arrange it in advance or provide a communications link between the authority for train movements (th ... mechanisms for control would be formalized by railroad companies in a set of procedures called Train order operation, which was later partly automated through use of Automatic Block Signals (ABS) ...
Famous quotes containing the words train and/or require:
“The beginning of reform is not so much to equalize property as to train the noble sort of natures not to desire more, and to prevent the lower from getting more.”
—Aristotle (384322 B.C.)
“I say, beware of all enterprises that require new clothes, and not rather a new wearer of clothes.”
—Henry David Thoreau (18171862)