When seeimg a planefag some days ago say that Spanish encoding accounts for anomalies inear Oxnard CA and also lat 0 lon 0, then another anon saying the CA bogeys were positioned at runways … I wondered if maybe someone was using a real data encoding bogey issue to hide real activity in the region. One reason I backed off on the "ignore it's a known data encoding issue" in the last bread and suggested watching to see if the bogeys align to local landmarks and runways.
Question, why would ground vehicles show at all? Do these transponder traces usually show ground vehicles that operate on runways? Only an amateur planefag here, and have only watched patterns in air not at airports.