Disaggregate accessibility planning using OSM data and OpenTripPlanner
State of the Map 2013 6 September 2013, Birmingham
Andrew ByrdDeveloper, OpenTripPlanner and OTP AnalystPrincipal at ConveyalPhD candidate (town planning) at Université de Paris-Est
email: [email protected]
OpenTripPlanner (OTP)
- Fully multi-modal journey planner system (e.g. bicycle transfers)- Public transport focus- User preferences (speed, bicycle safety, hills...)- Open source license (GNU LGPL)
Consumes open data, using open standards - OpenStreetMap (OSM)- General Transit Feed Specification (GTFS)
Mature product- At feature freeze for version 1.0- Production deployments in many countries, backing mobile apps
Origins of the Project
Portland (Oregon, USA) transport authority TriMet- originators of the GTFS format in 2005- replacing costly commercial license renewal- product control and ownership by public agency- initial development organized by NYC non-profit OpenPlans
Development now coordinated by Conveyal- Open data-driven transportation planning consultancy- Former OP transportation technology team (Kevin, David, and I)- Open data driven transportation planning consultancy- Partnership with Integrated Transport Planning (Birmingham/Nottingham/MK)
TriMet fully migrated to FOSS code (ride.trimet.org)“Movable Code” transposable to any city with OSM and GTFS coverage (or equivalent: Netex, TransXChange, etc.)
OpenTripPlanner Analyst (OTPA)
Non-passenger-facing applications of the journey planning engine to problems in:
- town planning- infrastructure evaluation- service modification- social research
Uses OTP trip planning engine for one-to-many or many-to-many searches.
Retains, visualizes, and aggregates information usually “thrown away” in point to point searches.
All paths explored for a single point-to-point search
OpenTripPlanner Analyst (OTPA)
A. OTPA Web Services- pseudo-Mercator web map tiles or WMS- interactive exploration of travel time contours
B. Batch Analyst- accessibility indicator calculation- percentage of employment basin reachable from each home- number of inhabitants able to reach each location in M minutes- regional summary information and visualization
Travel Time Visualization: minutes from Portland Airportgrey 0-15 min, green 15-30 min, blue 30-45 min, yellow 45-60 min
OpenTripPlanner Analyst (OTPA)
Combining OSM street data with GTFS feeds allows a high level of spatial and temporal detail.
Infrastructure impact exploration: Paris regional line 15blue ~15 min, green ~45 min
Potential Path Area (time geography)
Time remaining to perform an activity given O/D and time constraints.
Potential Path Area (time geography)
Visualization of equidistant zone
Service modification analysis (accessible population within 60 minutes)grey=2-4M, blue=4-6M, red=6-8M, yellow=8-10M
Post hurricane Sandy accessibility (East River tunnels flooded):Jamaica as “central” as midtown Manhattan
Percentage decrease in accessible populationgrey=30% red=60% yellow=90%
Open data is a window into the spatio-temporal structure of cities.
OTP Analyst reveals latent characteristics of these data sets, enabling evidence-driven decision making and immediate
feedback for debate.
Links
code: http://github.com/openplans/OpenTripPlanner
OpenTripPlanner Analyst demo: http://gp15.fr
OTP Analyst information: http://opentripplanner.com/2012/07/
Portland Regional Multi-modal trip planner: http://ride.trimet.org
Netherlands / Belgium real-time routing: http://www.opentripplanner.nl
Andrew Byrd email: [email protected]
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