Reverse Direction
When trains operate in the reverse direction, they may "back trip" on train stops applying to the normal direction, which is a nuisance. This may be avoided in one of three ways:
- In Melbourne the rear trip cock is raised, although this runs the risk of runaways from terminal stations at high elevations.
- In Sydney, the rear trip is always lowered, and trip arms in the opposite direction are "suppressed" so that they do not engage the rear trip cock. Trip cocks on intermediate cars, if any, are always raised.
- In New York, when the signalling system clears motion in one direction (on bi-directional track or through an interlocking), it will automatically drive the trip arms which apply to the other direction. This is necessary because trip cocks are located along the entire length of trains in New York, not just the lead car.
Read more about this topic: Train Stop
Famous quotes containing the words reverse and/or direction:
“They shall beat their swords into plowshares, and their spears into pruninghooks: nation shall not lift up sword against nation, neither shall they learn war any more.”
—Bible: Hebrew Isaiah, 2:4.
The words reappear in Micah 4:3, and the reverse injunction is made in Joel 3:10 (”Beat your plowshares into swords ...”)
“The mountainous region of the State of Maine stretches from near the White Mountains, northeasterly one hundred and sixty miles, to the head of the Aroostook River, and is about sixty miles wide. The wild or unsettled portion is far more extensive. So that some hours only of travel in this direction will carry the curious to the verge of a primitive forest, more interesting, perhaps, on all accounts, than they would reach by going a thousand miles westward.”
—Henry David Thoreau (1817–1862)