Vol. I · A field notebook
Notes on cooperative-ITS — written slowly, in plain text.
Everything here through the V2X lens: positioning, in-vehicle networks, the software-defined vehicle, sensor fusion, PKI, and how any of it gets deployed, funded and regulated. Only what matters once vehicles start talking to each other and to the roadside.
Recent entries
The business model V2X was missing was a crash test For a decade V2X waited for a mandate. The forcing function arrived instead as a line in an NCAP protocol, and it changes who pays and when.
The CPOC Annex I naming trap What happens when an L0 C-ITS testbed quietly skips the EU-TLM_<env> and <CPA-ID>_<RCA-NAME> naming conventions, and why you can't fix it later without breaking every consumer.
One hazard, three road-data worlds that don't talk to each other Ice on the road exists in three separate European data systems that don't natively interoperate. Six organisations signed a paper in 2024 admitting it.
OpenSCMS: a read of the 1609.2.1 credential lifecycle A profile of OpenSCMS, the first deployable open backend aligned with IEEE 1609.2.1 (2022), and what its RA/ECA/ACA spine says about the US vs EU credential-management split.
ETSI C-ITS message set — a 5-minute tour What CAM, DENM, CPM, VAM, MAPEM, SPATEM, IVIM, SREM and SSEM are, who emits them, at what rate, and what each one actually contains.
Welcome to c-its.dev What this blog is, who it's for, and what to expect from the writing here. A short manifesto before the actual technical posts begin.