Mixing Double and Single Track
Because double and single track may use different signalling systems, it may be awkward and confusing to mix double and single track too often. For example, intermediate mechanical signal boxes on a double-track line can be closed during periods of light traffic, but this cannot be done if there is a single-line section in between. This problem is less serious with electrical signalling such as Centralized traffic control.
Read more about this topic: Double Track
Famous quotes containing the words mixing, double, single and/or track:
“How natural that the errors of the ancient should be handed down and, mixing with the principles and system which Christ taught, give to us an adulterated Christianity.”
—Olympia Brown (1835–1900)
“Go; and if that word have not quite killed thee,
Ease me with death by bidding me got too.
Oh, if it have, let my word work on me,
And a just office on a murderer do.
Except it be too late to kill me so,
Being double dead: going, and bidding go.”
—John Donne (1572–1631)
“You behold a range of exhausted volcanoes. Not a flame flickers on a single pallid crest.”
—Benjamin Disraeli (1804–1881)
“What is the use of going right over the old track again? There is an adder in the path which your own feet have worn. You must make tracks into the Unknown.”
—Henry David Thoreau (1817–1862)