WebCAT is our Web-based Connectivity Assessment Toolkit. The toolkit contains two ways of measuring transport connectivity:
PTALs can be viewed for the whole of London or for individual locations, in both the current (base) and future transport networks.
The TIM tool allows you to plot travel times on the map for any location in London with user-selected attributes including:
You can also view statistics (for example, population, jobs or services) associated with the travel time bands displayed on the map and compare different scenarios.
Our complete guide to connectivity assessment will help you become familiar with the techniques we use to assess levels of connectivity in London.
The guide explains how PTAL and TIM are calculated.
If you feel that a WebCAT-calculated PTAL is not representative of your chosen site (for example, it's on the boundary of two cells giving different levels), ask for a copy of our PTAL spreadsheet macro and guide by emailing firstname.lastname@example.org.
This macro can convert the PTAL calculation text report to a spreadsheet format for you to modify accordingly.
Terms used in WebCAT are explained in our WebCAT glossary.