A seminar at The Infrastructure Show, NEC 19 October 2010, considered how value for money can be achieved in interchange upgrades over the long term. John McNulty - Head of Interchange, also described methods in use in London by Transport for London (TfL) to ensure costs are kept low where possible, knowledge shared and the whole range of options considered to maximise the opportunity to ensure public transport, walking and cycling are as attractive as they can be.
Best Practice guidelines have been published and updated as knowledge and case studies have been recorded. These are based around four design themes Efficiency, Usability, Understanding and Quality.
Interchanges have been defined and graded into a number of types from strategic, inter-regional to local. TfL have classified a total 645 material interchanges, where people can change between one mode of transport to another. The Legible London totem signs are an example of the effort to made to provide simple information to people in a consistent way; at the same time it provides a great opportunity to 'de-cluster' streets of vast numbers of signage etc. and integrate relevant information in one place. This itself is not a simple job as there are many views that could have been considered; this article in the Londonist attests.
The use of a common relevant transport model across all the different stakeholders, for recent major and complex interchanges such as King's Cross/St Pancras, have provided an invaluable tool to ensure demand and design requirements are fully understood, considered and implemented. It would be useful to see some simple key metrics for the potential capacity (local and regional), intended design/ functionality, and actual use of the interchanges in each category types. This would enable people to see the tangible benefits of better and optimal interchange design, the value of investing in the detail of the scheme for long-term gains in performance and behavioural change.