Multiple-unit trains

The paper summarizes the main operational characteristics of multiple-unit electric-traction rolling stock and its relative merits as compared with locomotive-hauled rolling stock. References to train formations operated by London Transport and the various Regions of British Railways on the electrified sections are included in the Appendix. Observations are made on major design aspects and the difference between tunnel and surface-line working. Comments are made on the make-up of trains, associated with equipment requirements, and the governing limitations from the economic viewpoint are outlined. Reference is also made to uncoupling and the provision of automatic equipment.