Examination of the regional pattern of four-wheeled vehicle plain track derailments caused by broken springs (TM-FT-109)

The rates of occurrence of derailments caused by broken springs to different types of vehicle are to a certain extant characteristic of the vehicle design, and are documented elsewhere (TMFT 75 "Derailment Records of Individual Vehicle Diagrams, and of Groups of Diagrams related to mileage, 1972-1976" by C. Robertson; and...