"In May, EFF released a report showing that 71 law enforcement agencies in 22 California counties — including Sacramento County — were sharing such data. The practice is in violation of a 2015 law that states “a (California law enforcement) agency shall not sell, share, or transfer ALPR information, except to another (California law enforcement) agency, and only as otherwise permitted by law.”
"In May, EFF released a report showing that 71 law enforcement agencies in 22 California counties — including Sacramento County — were sharing such data. The practice is in violation of a 2015 law that states “a (California law enforcement) agency shall not sell, share, or transfer ALPR information, except to another (California law enforcement) agency, and only as otherwise permitted by law.”
Link to the mentioned EFF report : https://www.eff.org/press/releases/civil-liberties-groups-demand-california-police-stop-sharing-drivers-location-data