Switch and crossing design. Facing switch design to reduce derailment risks in congested layouts (An update/re-issue of an earlier memorandum IM TS 114 date February 1980) (TM-TS-120)

The derailment service of the R & D Division has investigated a number of slow speed flange climbing derailments at facing switches and a comprehensive report was presented to the Permanent Way Sub-Committee in 1974. Since this date some further similar individual derailments - in particular outside Glasgow Central Station...