http://wiki.opentrafficmap.org/ 2026-08-08T07:19:07+00:00 http://wiki.opentrafficmap.org/ http://wiki.opentrafficmap.org/_media/wiki:dokuwiki.svg text/html 2026-08-06T16:51:19+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:faq?rev=1786035079&do=diff FAQ What does the QR Code mean on the back side of the case? If you scan the QR code with a mobile phone, you will be directed to the “Node Admin page” of this device. URL <https://opentrafficmap.org/service/?nodeId=nodeXXX> ATTENTION: Please change the “User Password” to protect your node settings! text/html 2026-08-06T16:38:10+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:software:mqtt?rev=1786034290&do=diff MQTT Server All receivers report their data to a central MQTT broker, which feeds the live map at opentrafficmap.org. Connecting * The current connection string (host and port) is defined in the firmware: its-g5-receiver-firmware/main/config.c * Publishing requires no username or password. * Every node identifies itself by its text/html 2026-08-06T16:36:32+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:pageideas?rev=1786034192&do=diff Page Ideas Status Aug 2026: ✔ = implemented (link points to the actual page — some names differ from the original plan below), ◐ = partially covered, ○ = still open. Planned page Status Actual page / notes start ✔ start (incl. documentation overview and group order) text/html 2026-08-06T16:23:55+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:start?rev=1786033435&do=diff OpenTrafficMap Wiki OpenTrafficMap is an open project for visualizing and analyzing C-ITS data (Cooperative Intelligent Transport Systems). Its goal is to make visible which data traffic lights, trams, buses, and modern cars are already transmitting unencrypted today. text/html 2026-08-06T16:23:52+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:contributing?rev=1786033432&do=diff Contributing OpenTrafficMap is an open project — here is how you can help: Run a receiver The most valuable contribution: live data can only be shown where at least one receiver is nearby. * Get a receiver via the group order or build one yourself — see text/html 2026-08-06T16:23:49+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:sightings?rev=1786033429&do=diff Sightings Field observations: what has actually been received where. Feel free to add your own sightings — ideally with date, location, message type, and a screenshot from the live map. Background on what you can expect to see: Who is sending C-ITS? Austria Graz * Traffic lights, trams, and buses are visible on the live map. text/html 2026-08-06T16:23:46+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:reception?rev=1786033426&do=diff Reception & Placement C-ITS can only be received over a few hundred meters up to a few kilometers, so receiver placement makes a big difference. Mounting position * The higher, the better. With the 3D-printed enclosure, the receiver board can be mounted outdoors. text/html 2026-08-06T16:23:00+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:software:home_assistant?rev=1786033380&do=diff Home Assistant There are two ways to combine OpenTrafficMap with Home Assistant: Monitoring an OpenTrafficMap node The node publishes its telemetry to the MQTT broker. Home Assistant can read it via the MQTT integration; from there you can build sensors, automations, and dashboards. The credentials for subscribing to your own node are shown in the self-service portal — see text/html 2026-08-06T16:22:57+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:software:transmission_methods?rev=1786033377&do=diff Transmission Methods There are several ways to get the C-ITS frames received by an ESP32-C5 into OpenTrafficMap (i.e. onto our MQTT server): Ethernet (official firmware) Connect the ESP32-C5 directly to the internet with an SPI-to-Ethernet chip (W5500, ENC28J60): text/html 2026-08-06T16:22:19+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:c-its:start?rev=1786033339&do=diff What is C-ITS? C-ITS stands for Cooperative Intelligent Transport Systems: vehicles and infrastructure communicate with one another. Typical C-ITS participants are: Stationary RSUs - Road Side Units * Traffic lights (traffic signal installations) * Roadworks signs text/html 2026-08-06T16:22:16+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:c-its:messages:ivim?rev=1786033336&do=diff IVIM (Infrastructure to Vehicle Information Message) IVIMs carry road sign and infrastructure information (ETSI TS 103 301 / ISO 19321) — essentially electronic road signage. Typical contents: * variable speed limits from overhead gantries * text/html 2026-08-06T16:22:13+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:c-its:messages:spatem?rev=1786033333&do=diff SPATEM (Signal Phase and Timing Extended Message) SPATEMs transmit the current state of a traffic light (ETSI TS 103 301): which signal groups are red, amber, or green right now — and how the state is expected to change. A SPATEM contains, among other things: text/html 2026-08-06T16:22:10+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:c-its:messages:mapem?rev=1786033330&do=diff MAPEM (MAP Extended Message) MAPEMs describe the topology of an intersection (ETSI TS 103 301): the geometry of its lanes, which ingress and egress lanes exist, and which maneuvers connect them. A MAPEM contains, among other things: * the reference position of the intersection text/html 2026-08-06T16:22:07+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:c-its:messages:denm?rev=1786033327&do=diff DENM (Decentralized Environmental Notification Message) DENMs are event-driven warning messages (ETSI EN 302 637-3). While CAMs are broadcast continuously, a DENM is only transmitted when something exceptional happens, and it is repeated for as long as the event is valid. text/html 2026-08-06T16:12:11+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/verbreitung?rev=1786032731&do=diff Eine englische Kurzfassung dieser Seite ist unter Who is sending C-ITS? verfügbar. Verbreitung Wo alles C-ITS angewendet wird. Fahrzeuge Nur Fahrzeuge mit ITS-G5 (WLANp / 802.11p, 5,9 GHz) senden CAM/DENM per Direktfunk und sind damit für RSUs und Empfangsstationen hörbar. Die mobilfunkbasierten Gefahrenwarnsysteme anderer Hersteller (Mercedes, BMW, Ford, Volvo, Audi) laufen über Hersteller-Clouds und tauchen im Direktfunk text/html 2026-08-06T16:11:01+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/en:c-its:senders?rev=1786032661&do=diff Who is sending C-ITS? Extracted from the more detailed German page verbreitung, which also lists the individual sources. Only vehicles with ITS-G5 (WLANp / 802.11p, 5.9 GHz) broadcast CAM/DENM messages via direct radio and can therefore be picked up by RSUs and receiver stations. The cellular-based hazard warning systems of other manufacturers (Mercedes, BMW, Ford, Volvo, Audi) run through manufacturer clouds and do text/html 2026-08-06T16:02:01+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/messages:cam?rev=1786032121&do=diff Diese Seite ist auch auf Englisch verfügbar. CAM (Cooperative Awareness Message) Kompatible Fahrzeuge senden mit 1 - 10 Hz CAM Nachrichten aus (typischerweise 4x pro Sekunde) Die CAM Nachricht enthält: * GPS-Position * Geschwindigkeit * Fahrtrichtung text/html 2026-08-06T16:01:57+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/c-its:rsu?rev=1786032117&do=diff Diese Seite ist auch auf Englisch verfügbar. RSU von Yunex Traffic text/html 2026-08-06T16:01:54+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/c-its?rev=1786032114&do=diff Diese Seite ist auch auf Englisch verfügbar. Was ist C-ITS C-ITS steht für Cooperative Intelligent Transport Systems. Dabei kommunizieren Fahrzeuge und Infrastruktur untereinander und miteinander Typische C-ITS Teilnehmer sind: stationäre RSU - Road Side Units * Ampeln (Verkehrslichtsignalanlagen) text/html 2026-08-06T16:01:51+00:00 fasteiner (fasteiner@undisclosed.example.com) http://wiki.opentrafficmap.org/gehaeuse?rev=1786032111&do=diff Diese Seite ist auch auf Englisch verfügbar. Gehäuse 3D drucken <https://codeberg.org/opentrafficmap/its-g5-receiver/src/branch/main/case> Wir empfehlen das Gehäuse aus ASA zu drucken, dann sollte es UV-beständig und wasserfest sein. ASA ist ohne spezielle Zusätze aus UV beständig, der Hersteller des Filament sollte relativ egal sein. Wir kaufen immer das günstigste in weiß.