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The Bliksem Consortium, of which Conveyal is a member, has released its C implementation of a timetable-based public transport routing algorithm under an open source license. The code is compact and fast enough to run directly on a mobile phone, providing routes even without an internet connection.
New data sources are making it possible to know and account for the current state of traffic and plan trips accordingly. With these real-time data sources now opening up, we have revised how OpenTripPlanner stores and manipulates timetables to allow continuous updates and thus more accurate results.
The routing engine at the core of OTP has the potential to answer much more general questions about paths through the city, visualizing the connections between transport and land use.