Up and down
In British practice, railway directions are usually described as "
up" and "
down", with "up" being towards a major location. This convention is applied not only to the trains and the tracks, but also to items of lineside equipment and to areas near a track. Since British trains
run on the left, the "up" side of a line is usually on the left when proceeding in the "up" direction.[
citation needed]
On most of the network, "up" is the direction towards
London. I
n most of Scotland, with the exception of the West and East Coast Main Lines , and the Borders Railway, "up" is towards Edinburgh. The
Valley Lines network around
Cardiff has its own peculiar usage, relating to the literal meaning of traveling "up" and "down" the valley. On the former
Midland Railway "up" was towards
Derby. On the
Northern Ireland Railways network, "up" generally means toward
Belfast (the specific zero
milepost varying from line to line); except for cross-border services to
Dublin, where Belfast is "down". Mileposts normally increase in the "down" direction, but there are exceptions, such as the Trowbridge line between Bathampton Junction and Hawkeridge Junction, where mileage increases in the "up" direction.
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