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Welcome to the IHM Transit Data Linkage page! This page documents the process by which public transport smartcard transactions, collected under the ITSO standard (https://www.itso.org.uk/), can be linked to other datasets to infer spatial and temporal journey characteristics of passengers.
The datasets involved are:
AFC: smartcard transactions as recorded by automated fare collection system
AVL: GPS-based vehicle tracking, known as Automated Vehicle Locations
Asset Log: location log of ticket machines across the fleet
CCH: anonymised passenger account database, relating smartcards to an anonymised account ID
Timetables: local timetable data collected in CIF format
Naptan Stops: official, geo-referenced database of all bus stop in the UK
Network Route Lookup: an enriched version of the timetable linking routes to scheduled journeys and stops
Here we provide details of the data linkage process along with reference to the specific files employed.
The data linkage can be considered in three parts.