Note 21 — Chapter XVIII
Reading edition
"As affecting the safe working of railways, the level crossing of one railway by another is a matter of very serious import. Even when signalled on the most approved principles, they are a source of danger, and, if possible, should always be avoided. At junctions of branch or other railways the practice has been adopted by some companies in special cases, to carry the off line under or over the main line by a bridge. This course should generally be adopted in the case of railways on which the traffic is large, and more expressly where express and fast trains are run." Report on Accidents on Railways of the United Kingdom during 1877, p. 35.