The 1948 Locomotive Exchanges The heavy freight classes

摘要

Despite their importance, the heavy freight locomotive exchanges of 1948 have almost become the forgotten part of the testing programme, principally because the trains did not carry the public and so the likes of O S Nock and C J Allen were unable to record the individual performances of the locomotives involved, but freight and goods traffic was still a highly important business sector of the railways in 1948.