====== 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 **not** appear on direct radio.

===== Vehicles with ITS-G5 (Europe) =====

==== Volkswagen ====
By far the largest ITS-G5 fleet: more than 2 million vehicles produced with Car2X for Europe (as of Oct 2025); the ADAC now even cites more than 2.3 million. Initially standard equipment, but since 2024/2025 only optional in most model lines — currently standard only in the ID.7. Car2X can be switched off in the vehicle, and messages are sent using changing pseudonyms.

  * Golf 8 (since late 2019, standard from market launch — the first mass-produced ITS-G5 vehicle ever; optional since facelift 8.5)
  * ID.3 (since 09/2020), ID.4 (since late 2020), ID.5 (since 2022) — standard until early 2025, optional since then
  * ID.7 / ID.7 Tourer (since 2023, still standard)
  * ID. Buzz (since 2022)
  * Multivan (T7)
  * Tiguan III (since early 2024; standard only in model year 2024, optional afterwards)
  * Passat B9 (since early 2024)
  * Tayron (since 2025)
  * T-Roc II (since late 2025) — //the T-Roc I did not have Car2X//

==== Cupra ====
  * Born (optional in the Tech Pack M/XL; according to the 2023 ADAC manufacturer survey, only about 4,800 units delivered)
  * Tavascan and Terramar (optional)

==== Other VW Group brands (no ITS-G5) ====
  * Škoda: no ITS-G5, not even in the Enyaq/Elroq (MEB) — instead cloud-based "Local Hazard Information"; a real C2X was announced in 2022 but has not materialized so far
  * Audi: no ITS-G5 in Europe — hazard warnings only via cellular (Audi connect package; latency 1–2 minutes according to the ADAC)
  * Seat: no offering

===== Cellular-based hazard warning (no direct radio — not receivable) =====

For distinction — some of these systems are also marketed as "Car-to-X", but they use vehicle-to-cloud-to-vehicle communication over cellular networks:

  * Mercedes-Benz: "Car-to-X" via cellular since 2013, partly standard depending on the model line
  * BMW: "Local Hazard Warning", cloud-based (HERE), fleet-wide since about 2020
  * Ford: "Local Hazard Information", standard in all EU models with the 4th-generation modem (since 09/2019); latency 20–60 s
  * Volvo: "Connected Safety" (hazard-light and slippery-road warnings), standard from model year 2020, 4G
  * According to the 2023 ADAC manufacturer survey, no Car2X offering at all: Renault, Dacia, Stellantis, Hyundai, Kia, Toyota (Europe), Nissan, Mazda, Mitsubishi, Suzuki, Subaru, Polestar, Aiways, Ora

===== Outside Europe =====

==== USA (DSRC/WAVE, 5.9 GHz) ====
  * Cadillac CTS: V2V via DSRC, standard in model years 2017–2019 (US/Canada only), discontinued with the end of CTS production. In 2020, the FCC reallocated the upper 5.9 GHz band — DSRC is effectively dead in the USA, and the transition is moving towards C-V2X.

==== Japan (ITS Connect, 760 MHz) ====
  * Toyota "ITS Connect": optional since 2015 in the Crown and Prius, later in further Toyota/Lexus models; uses its own 760 MHz band (V2V + V2I with traffic lights), Japan only, incompatible with ITS-G5.

==== China (C-V2X / LTE-V2X) ====
  * State-driven rollout based on C-V2X (direct mode PC5, also 5.9 GHz, but incompatible with ITS-G5). First production vehicle: Buick GL8 Avenir (SAIC-GM, from late 2020); since then numerous models by Chinese manufacturers with factory-fitted C-V2X, including the Hongqi E-HS9.

===== Infrastructure =====

Typical stationary senders ([[en:c-its:rsu|RSUs - Road Side Units]]):

  * **Motorways:** ASFINAG has equipped the Austrian motorway network with C-ITS on a large scale ([[https://blog.asfinag.at/innovationsgeist/c-its-vernetzte-autos-intelligenter-verkehr/|ASFINAG blog]], [[https://c-its-deployment-group.eu/activities/c-its-deployments/2020-10-09-asfinag-connects-roads-with-vehicles-on-a-large-scale-in-europe/|C-ITS Deployment Group]]); in Germany, the Autobahn GmbH is rolling out C-ITS as well ([[https://www.autobahn.de/digitales-innovation/digitale-autobahn/c-its|autobahn.de]])
  * **Car2X traffic lights:** e.g. Vienna ([[https://www.wien.gv.at/verkehr/ampeln-kooperative-intelligente-verkehrssysteme|wien.gv.at]]), Kassel, and other C-Roads pilot regions
  * **Public transport:** buses and trams with OBUs — e.g. Klagenfurt with 12 RSUs, 74 OBUs in scheduled buses, and 3 OBUs in automated shuttles; bus prioritization via C-ITS in Hamburg; tram and bus projects in Graz
  * plus roadworks warning trailers, toll gantries, and emergency vehicles from the various C-ITS projects

A regularly updated list of the pilot regions in Germany and Austria (with sources) can be found on the German page [[:verbreitung]].

===== Signatures and pseudonyms =====

C-ITS packets are transmitted unencrypted, but they can be cryptographically signed. Vehicles protect privacy by sending with changing pseudonyms instead of fixed identifiers.

===== In practice =====

Any vehicle you receive via direct radio around here is almost certainly a VW (or a Cupra Born with the Tech Pack) — plus special-purpose and commercial vehicles from the C-ITS projects (scheduled buses, safety trailers, emergency vehicles).