Electronic Frontier FoundationEven anonymized “vehicle-to-everything” (V2X) data can be filtered or hacked, potentially providing a gold mine for advertisers, police or criminals. “Once that data is out there, people will find ways to use it,” EFF’s Cliff Braun told @marketplaceapm. https://www.marketplace.org/2024/08/20/dot-vehicle-to-everything-technology-cars-infrastructure-road-safety/
Karl Auerbach@eff @marketplaceapm For several years I have been suggesting in V2* communications that much can be done via optical (e.g. modulated brake or headlight LEDs) signalling rather than the present obsession with using radio. There are significantly fewer privacy concerns with optical broadcast of "I am breaking, I am in anti-lock" than there are with radio broadcasts. Plus, optical signalling can obtain channel slots quicker than can WiFi or 5G.
Ben Fulton@karlauerbach @eff @marketplaceapm What about out-of-sight? Like if a vehicle is approaching around a corner or into a blind intersection?
@benfulton @eff @marketplaceapm Most Vehicle-to-X stuff works today via radio broadcast, one-way information flow (two-way conversational protocol excahanges cause security concerns.)
A good system would combine various methods - radio (to create information flow around non-line-of-sight barriers), optical (such as modulated LED headlights, running lights, taillights, etc), and perhaps even audio outside the range of most human or animal hearing.
If you look at today's V2X signalling, it is often Wi-Fi or 5G base stations (relays on lamp posts). There's channel access delays plus the problem of radio often being heard "too far away".
Amazon did a cool system in which cars would report to AWS things like breaking (especially anti-lock), velocity vectors, and, very importantly, position. Then other cars could do lookups for events on their path they would encounter in the next couple of minutes. If problems then the driver could be alerted to pay more attention.
@benfulton @eff @marketplaceapm I also ought to have mentioned that line-of-sight optical can obviate or at least reduce some of the security concerns that are present with radio.