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OpenTrafficMap
- solarpunk 5mo agoCool, but it there's no links for more info, and it doesn't seem to work in the USA at all.
- moooo99 5mo agoThe project was shared as part of a talk at Graz Linux Tage. You can find it here, unfortunately it is only available in German https://media.ccc.de/v/glt26-688-c-its-mit-einem-esp32-ampeln-straenbahnen-und-autos-tracken https://media.ccc.de/v/glt26-688-c-its-mit-einem-esp32-ampel...
- RobotToaster 5mo agoIs there a link to the hardware they mention in the description?
- Maxious 5mo agoThey built their own circuit board but the core module that does the 802.11p is just a ESP32-C5
- RobotToaster 5mo agoYes, I understand that. The translation makes it sound like they have published the software and design, or are somehow making boards available. >To improve coverage, we need your support! We have built a board with *ESP32-C5* and *PoE* that allows you to capture *C-ITS* packages yourself, and provide us for our face-up card, or process it yourself. Edit: found it, https://codeberg.org/opentrafficmap https://codeberg.org/opentrafficmap
- refulgentis 5mo agoPastebin here containing AI-generated English translation, LGTM: https://pastebin.com/fK5Atwzg https://pastebin.com/fK5Atwzg
- localhostinger 5mo agoHappy to see this popping up here, I watched the Linux Tage talk last week. The demo just kept getting better and better, to a point where the audience just interruptively cheers and claps away. I know nothing about the contents, but this warmed my heart. True hacker project!
- walrus01 5mo agoIf I had a dollar for every time I've seen an American on the Internet assume that anything published in the English language must be US-centric...
- rootusrootus 5mo agoConversely, if I had a penny for every time someone complained about Americans... ;-)
- dawnerd 5mo agoThat's one way to get rid of our (US) pennies now that they're useless!
- bravoetch 5mo agoYou still wouldn't have nearly as many dollars if you subtracted the times those people were correct in that assumption. Personally I assumed the site would be global. It doesn't have any info though, so I rely on finding out somewhere else I guess.
- lucideer 5mo ago> Personally I assumed the site would be global The only reason you would assume a site would be global is if your definition of "global" is "works in the US" & you never bother to check for support of other countries. I live in the anglosphere outside of the US & I encounter more than enough US-only web projects for that not be to a default assumption I hold. Most sites are not global - it's very odd to assume they would be.
- BigToach 5mo agoAnother reason could be that calling this OpenTrafficMap gives an impression that it is similar to OpenStreetMap, which is global.
- 5mo ago
- felixguendling 5mo agoIt's based on Car2X/Vehicle2X data that's sent unencrypted and can be received with chips you can order from China.
- rootusrootus 5mo agoWill be interesting to see how it fares when it does come to the US. It seems like there are some cars that already have the tech installed. But the US is allegedly more interested in the cellular version, which I am guessing is not as easy to pick up with a simple receiver? My gut feeling is that this seems like one of those things likely to face a lot of backlash when it becomes widely known.
- felixguendling 5mo agoI guess we only find out if some people order those chips and check if there is some data. From my understanding the idea is the same like maps showing air planes or ships (for ships it’s AIS). So without volunteers/pioneers who participate we won’t know. It seems like traffic lights and trams also can send data.
- uyzstvqs 5mo agoThe site is definitely lacking. It's half in German, half in English. The concept is that there is this protocol called ITS-G5, which is a European profile of 802.11p. Vehicles and traffic infrastructure can transmit telemetry on 5 GHz. Other vehicles and traffic infrastructure can use it for situational awareness. This website collects that data using local receivers and aggregates it onto a map, similar to what website like ADSB-Exchange do with ADS-B. What is concerning is that vehicles appear to broadcast a MAC address. Does this mean that ITS-G5, 802.11p, and C-ITS could be used for persistent tracking?
- alexpotato 5mo agoThis should be a top level comment as it has a ton of useful info and can be voted to the top.
- softgrow 5mo agoReading the translation of the talk, public transport vehicles have a persistent MAC but for private cars the MAC address changes every 15 minutes.
- xd1936 5mo agoI haven't seen a theme on OSM data look this modern and fresh before. Beautiful color palette and iconography!
- stevenhubertron 5mo agoIt's a Mapbox theme
- azza2110 5mo agoAgreed - it is very similar to Google Maps.
- pxeboot 5mo agoIt looks like Mapbox Standard [1]. While a free tier is available, most sites are going to need a paid plan. [1] https://docs.mapbox.com/map-styles/standard/guides/ https://docs.mapbox.com/map-styles/standard/guides/
- maelito 5mo agoCan you try this one ? Though not as flashy, it's a step away from most OSM styles. https://cartes.app/#13.13/47.06727/15.44801 https://cartes.app/#13.13/47.06727/15.44801
- klez 5mo agoI, for one, do like it. I usually prefer lighter themes, but this one would be more than ok for me.
- maelito 5mo agoCool ! It's fully open source. Quite a complex TS style https://codeberg.org/cartes/web/src/branch/master/app/styles/base.ts https://codeberg.org/cartes/web/src/branch/master/app/styles... And its Tilemaker profile to generate the tiles : https://codeberg.org/cartes/serveur/src/branch/master/tilemaker/resources/process-openmaptiles.lua https://codeberg.org/cartes/serveur/src/branch/master/tilema...
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- mlaretallack 5mo agoFound out about this today, up until now 802.11p hardware is very expensive, and so you cannot easily do anything with V2x messages like CAM or SPAT, but the fact this was done with sub £20 hardware is really interesting.
- rompic 5mo agoFully agree. That's the most interesting thing about this.
- calin2k 5mo ago[dead]
- Cider9986 5mo ago>WebSocket getrennt Hug of death? Nothing loads.
- poorman 5mo agoI wonder if this could be used to track location of the vehicle
- embedding-shape 5mo agoIsn't that the point of the project? I'm seeing a bunch of tracked vehicles, although they all seem parked at the moment. Does Graz not have night bus service?
- flicken 5mo agoThe night bus service only runs the nights "before" Saturday and Sunday[1]. It's a small university city with 300k population (600k greater metropolitan area). [1] https://www.verbundlinie.at/en/customer-service/arriving-in-graz https://www.verbundlinie.at/en/customer-service/arriving-in-...
- embedding-shape 5mo ago> It's a small university city with 300k population Made me smile, I'm from outside a city we used to call "big city" when I was growing up, it had ~110K population and is the 9th largest in the country or something :P Anyways, that city still has night service, so not sure why a city with three times the population wouldn't, especially if it's a university city.
- fragmede 5mo agoIf it's not able to support a robust bus system, it's not a city, just a really big town.
- modinfo 5mo agoIt will be nice if we everybody could just add own receivers, then it will be quickly cover more cities. But still nice project.
- modinfo 5mo agoAhh, it send automatically to website! "mqtts://cits1.opentrafficmap.org"
- RobotToaster 5mo agoCodeberg link https://codeberg.org/opentrafficmap https://codeberg.org/opentrafficmap
- fy20 5mo agoHow does the hardware work? It seems like there isn't any radio hardware other than the ESP, so that can natively receive the ITS-G5 messages? Why not just use an ESP board with native ethernet then?
- rompic 5mo agoThey are doing it with the standard WIFI receiver. Currently they are sending the Wireshark dumps to a backend for processing. According to their presentation they are working on a rust firmware to do everything on the board.
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- ablation 5mo agoHuge performance issues for me trying to use it on Chrome. But I like the idea.
- CountGeek 5mo agoI recently learned that with smart traffic lights cyclists can change traffic lights -https://nltimes.nl/2026/04/28/new-app-turns-traffic-lights-green-faster-cyclists https://nltimes.nl/2026/04/28/new-app-turns-traffic-lights-g...
- alex_duf 5mo agoRotterdam is using rain data to asjust traffic lights. Bicycles are waiting less at intersections. They also make the amber light longer to give you time to break for farther away and avoid a fall. https://popupcity.net/insights/rotterdam-traffic-light-prioritizes-cyclists-when-it-rains/ https://popupcity.net/insights/rotterdam-traffic-light-prior...
- jorisboris 5mo agoFor a while I tried creating traffic-light-free bicycle routes from my home in the suburbs to my office in Amsterdam center (because intersections, especially with trams, can sometimes take a long time. Unfortunately there was no API with data on which intersections have traffic lights and I had to build these routes manually in Strava using satellite images. I did learn in the process that some traffic light data is actually available from the government, but only for selected partners. The Flitsmeister app for example has it and shows at some traffic lights how long it will take for the light to turn green (in a car, not on a bicycle)
- vlabakje90 5mo agoOpenStreetMap has traffic lights (at least in my municipality in the Netherlands) so it might be usable for this purpose. Also, https://routeplanner.fietsersbond.nl/ https://routeplanner.fietsersbond.nl/ has options for different route types including an option to avoid traffic lights if a reasonable alternative is available.
- jorisboris 5mo agoThanks for the golden tip, I just told Claude to use OSM and it actually built an app which works!
- Myzel394 5mo agoI don't get this at all. Is this a live view of the traffic lights, buses, and more? How do they get the data?
- TKAB 5mo agoThis is an English translation from the talk description: Did you know that if your car supports *Car2X* via *ITS-G5*, it transmits its exact GPS position, speed, longitudinal and lateral acceleration, pedal positions, length and width, and much more—all unencrypted—up to four times per second on a 5-GHz band? Trams in Graz also transmit this data, including their line numbers. This allows us to track the trams in real time and display them on a map. Many traffic lights in Graz now support *C-ITS* and transmit data every second regarding the exact configuration of the lanes, the current signal status, and when the next phase is expected. With an *ESP32-C5*, we can already receive this data from a distance of several hundred meters. We’ll show you how we collect and process this data. On a live map, you can see (within the coverage area) trams, the color of the traffic lights and when they’ll change next, and which cars equipped with Car2X are currently driving and at what speed. Using Grafana, we display historical data on traffic light cycles and statistics, such as wait times at crosswalks and in traffic lanes. We also give you access to the collected data for your own analysis. To improve coverage, we need your help! We’ve built a board with *ESP32-C5* and *PoE* that lets you capture *C-ITS* packets yourself and share them with us for our open map, or process them on your own.
- maelito 5mo agoWe need global open congestion data. At least on the european scale. It's important so that alternatives to Google Maps and Waze (Google) can emerge. To create congestion data, one needs to own an OS with location tracking, or be an international mobile network. Won't happen. [disclaimer : I work on an open source alternative to big tech's maps]
- crimsoneer 5mo agoWhat is the OS alternative? OSM?
- maelito 5mo agohttps://cartes.app https://cartes.app. Based on OSM of course, but OSM is just a geographical database, with lots of incomplete UIs built on top by the community. Cartes is one of them, we're trying to make it complete and modern :)
- yosamino 5mo agoThat looks pretty cool - sorry to have a complaint immediately: When opening the map on Firefox/Linux zooming to like a France-size view and then not doing anything, the view keeps scrolling up and down relatively slowly, but very annoyingly. Zooming all the way out, it looks like the globe is jiggling back and forth ever so slightly, but continually. I've recently seen this happen on another mapping application ( cannot remember which one) so it's probably in down the stack somewhere in a library you are using.
- CodeCompost 5mo agoAm I the only one here who thinks this is intrusive?
- woodydesign 5mo agoWow, I am dreaming a live NYC traffic map