Route Availability of A Line
The route availability for a line is calculated taking in to account bridge strength, track condition, structural issues and so on. A route availability of one (RA1) is the most restricted line, open to possibly one type of locomotive specially designed for it. A route availability of 10 is the most open, usable by any locomotive that fits within the GB loading gauge that has been 'passed' for it (checked for conflicts with infrastructure such as platforms).
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Famous quotes containing the words route, availability and/or line:
“By a route obscure and lonely,
Haunted by ill angels only,
Where an eidolon, named Night,
On a black throne reigns upright,
I have reached these lands but newly
From an ultimate dim Thule—
From a wild weird clime that lieth, sublime,
Out of space—out of time.”
—Edgar Allan Poe (1809–1849)
“Since ... six weeks ago, there has been no day in which I have not had letters and visits on the subject of my nomination for the Presidency.... I say very little. I have in no instance encouraged any one to work to that end.... I have said the whole talk about me is on the score of availability. Let availability do the work then.”
—Rutherford Birchard Hayes (1822–1893)
“What, will the line stretch out to the crack of doom?”
—William Shakespeare (1564–1616)