Junction Signals
British railway signalling is unusual in that it employs the direction signalling philosophy, rather than that of speed signalling; in other words, a driver is informed of which route he will take at a junction, rather than the speed at which he should travel through it. This probably stems from the early days of railways when points and signals were not interlocked, and it was therefore important for a driver to know whether the points had been correctly set for him or not, and has stuck ever since.
Read more about this topic: UK Railway Signalling
Famous quotes containing the words junction and/or signals:
“In order to get to East Russet you take the Vermont Central as far as Twitchell’s Falls and change there for Torpid River Junction, where a spur line takes you right into Gormley. At Gormley you are met by a buckboard which takes you back to Torpid River Junction again.”
—Robert Benchley (1889–1945)
“The term preschooler signals another change in our expectations of children. While toddler refers to physical development, preschooler refers to a social and intellectual activity: going to school. That shift in emphasis is tremendously important, for it is at this age that we think of children as social creatures who can begin to solve problems.”
—Lawrence Kutner (20th century)