Analysis of Track Repair Options for the Central Line
Client: London Transport, Jan - Apr 1998
Towards the end of the financial year 1997-8, additional money was made available by London Underground for infrastructure repairs. Some of this was targeted for the Central line, which was at the time suffering from a number of temporary speed restrictions due to the quality of the track and substructure. However, the money available was less than that required to fix all the problems.
The Railway Consultancy Ltd were therefore commissioned to prioritise the works by undertaking a Cost:Benefit analysis of their effectiveness. A number of tests were run on the Train Service Model, in order to assess the impacts of removing the speed restrictions, not only individually but in a number of groups. Impacts were demonstrated to include not only passenger time savings (and hence revenue increases) from faster running, but also increased reliability from earlier arrival at termini, and changes to reliability from trains arriving at junctions earlier. Recommendations were made as to the optimum programme of expenditure, given the budgetary constraint. Detailed technical recommendations were also made in respect of minor improvements to the TSM's representation of the Central line service.
Last updated: Sunday, 18th December 2016
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