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 single track, mixing, double, single and/or track:
“It may seem strange that any road through such a wilderness should be passable, even in winter, when the snow is three or four feet deep, but at that season, wherever lumbering operations are actively carried on, teams are continually passing on the single track, and it becomes as smooth almost as a railway.”
—Henry David Thoreau (1817–1862)
“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)
“The Cossack eats Poland,
Like stolen fruit;
Her last noble is ruined,
Her last poet mute:
Straight, into double band
The victors divide;
Half for freedom strike and stand;—
The astonished Muse finds thousands at her side.”
—Ralph Waldo Emerson (1803–1882)
“Home! Yes! she would see Trafalgar Square, again; and Nelson on his plinth; and Chelsea Bridge as it dissolved into the Thames at twilight ... and St. Paul’s, the single Amazon breast of her beloved native city.”
—Angela Carter (1940–1992)
“The world leaves no track in space, and the greatest action of man no mark in the vast idea.”
—Ralph Waldo Emerson (1803–1882)