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:
“Give me Catholicism every time. Father Cheeryble with his thurible; Father Chatterjee with his liturgy. What fun they have with all their charades and conundrums! If it weren’t for the Christianity they insist on mixing in with it, I’d be converted tomorrow.”
—Aldous Huxley (1894–1963)
“You’ve been making love to a double dose of cyanide.”
—Robert Riskin (1897–1955)
“It’s impossible for someone who is human to have all good things together, just as there is no single country able to provide all good things for itself.”
—Herodotus (c. 484–424 B.C.)
“The war is dreadful. It is the business of the artist to follow it home to the heart of the individual fighters—not to talk in armies and nations and numbers—but to track it home.”
—D.H. (David Herbert)