Examination of four-wheeled vehicle plain line derailments hazarding class 'A' lines: 1977 - 1979 (TM-FT-114)

Derailments hazarding Class A lines tend to be higher-speed incidents than normal for B.R., and occur with disproportionate frequency on the Scottish Region. The incidents on Class A lines themselves are largely composed of high speed "Mechanical Failure" causes, particularly on the Scottish Region which has recently suffered from...