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GraphHopper Open Traffic Collection

Collections of URLs pointing to traffic information portals which contain open data or at least data which is free to use

Australia

Canada

Europe

  • Austria: Various data sets in Datex-II format. Requires registration; some packages are free of charge, others only for a fee. There is also an open rss feed. See #25.
  • Belgium:
    • Brussels Region: real-time traffic counting
    • Roadworks in Datex-II format. Relies on Alert-C for location decoding; ignore the alertCLocationTableNumber indicated in the Datex-II stream and use the default table for Belgium.
  • Catalonia: traffic events, custom XML format.
  • Czechia: Feeds for common traffic information, restrictions and weather. Available in both Datex-II and a custom format called DDR XML. Requires registration (free of charge) and running a server, to which the service will then push updates as they occur.
  • Estonia: road safety, traffic restrictions and real time traffic flow in Datex-II format. Location referencing seems to rely mainly on distance markers (on which data on OSM is scarce); WGS84 is used for single-point locations only; Alert-C is not used. Requires registration, free of charge.
  • Finland:
    • Digitraffic has several data sets, some in a custom JSON format, others in Datex-II level C
    • Roadworks in Datex-II and InfoXML format. The Datex-II set relies on Alert-C for location referencing.
    • Weight restrictions in Datex-II, relies on Alert-C for location referencing.
  • France
  • Germany:
  • Italy:
  • Lithuania:
    • traffic count
    • restrictions: Roadworks, road closures and restrictions, incidents; JSON-based format similar to Waze CIFS. More information at http://eismoinfo.lt > Open data/Atviri duomenys.
    • intensity: Real-time traffic flow data. More information at http://eismoinfo.lt > Open data/Atviri duomenys (note that the URL has changed since). Note that coordinates for road segments are in LKS94 (EPSG:3346).
  • Luxembourg: Traffic events in Datex-II format. Relies on Alert-C for location referencing.
  • Netherlands via the NDW. FTP-Server for data and measurements is ftp://83.247.110.3/ , see #2. Feeds are also available at http://opendata.ndw.nu/. Specifically:
    • brugopeningen has time tables for movable bridges, indicating when they are opened (i.e. raised) and thus impassable for road traffic
    • gebeurtenisinfo: traffic messages, e.g. traffic jams, wrong-way drivers, closures, detours and weather conditions
    • incidents: Breakdowns and accidents
    • srti has safety-related traffic information
    • wegwerkzaamheden: roadworks and event-related traffic measures
    • There are also various measured data publications, indicating traffic flow, speed, travel times and queues. The Datex-II situation reports rely heavily on Alert-C for location encoding. However, they do not use the regular Alert-C location code list for the Netherlands, but the VILD, which has incompatible lcoation codes. It can be downloaded from https://www.ndw.nu/documenten/nl/#cat_2. A semi-automatic process to convert the VILD to a Location Table Exchange Format, as understood by Alert-C toolchains, is described here.
  • Norway: Various data sets in Datex-II format, requires registration. Relies on Alert-C for location referencing, the LCL can be downloaded from the site.
  • Poland:
    • Traffic events in a custom XML format. Georeferencing is based on distance markers along the road; the WGS84 coordinate pair which accompanies the message is only suitable for display and can be significantly off. traff-gddkia is an attempt at a FOSS Java library which parses the data.
    • The NAP has Datex-II traffic data; registration is required to get access.
  • Slovenia: various data sets in Datex-II format, requires registration.
  • Spain
    • Madrid: Historical and real-time traffic data at city of Madrid's Open data portal
  • Sweden:
  • Switzerland traffic count only
  • UK:

Europe Misc

  • traffic data set of several cities https://github.com/ambuehll/UTD19/ under CC BY-NC-SA 4.0
  • Many EU data sets are available at the European Data Portal
  • EU authorities rely heavily on the Datex-II format for data exchange. Many of these data sets use Alert-C for location referencing and require a location code list (LCL) for location lookup.
  • In most cases the LCL can be obtained free of charge (at least for the countries which rely on Alert-C in their Datex-II feeds) and can be incorporated in applications, devices and information services, but some impose restrictions on redistribution of the raw tables. The OSM Wiki has a list of sources where LCLs can be obtained.
  • A FOSS Java library for location decoding is available here: traff-libalertclocation Decoding an Alert-C location requires the country code, location table number (LTN) and location code.
  • Some sources supply an incorrect LTN; ignore the alertCLocationTableNumber elements in the data and use the correct one instead. (The only exception being the Netherlands, see above.)
  • UNECE Traffic Census (updated every 5 years), showing AADT for segments of E-Roads within the UNECE region UNECE traffic census 2020

USA

Several entries are take from this stackexchange answer

Misc