- 10th 2 - to cost £10 millions, spread over the next two years. The works would be directed to adapting the lay-out of the lines to a wartime economy, increasing the capacity of routes avoiding London and other bottlenecks and the exchange points and marshalling yards at which congestion and delay have been especially apparent. 4. The post-war value of the works is necessarily dependent largely on the amount of traffic then requiring to be carried by rail and is, therefore, problematical; some of the works are not likely to have much, if any, post-war value, but others may constitute permanent and valuable improvements to the railway system.