The case, American Civil Liberties Union of Southern California v. Superior Court, involves data collected by Automated License Plate Reader (“ALPR”) systems. Law enforcement authorities in Los Angeles use ALPR systems to automatically scan license plates of all nearby cars and cross-reference them against a “hot list” of license plates that correspond to stolen vehicles.
A California appeals court concluded that ALPR data should not be disclosed under the California Public Records Act based on the statutory exemption for law enforcement investigatory records. That decision is currently on appeal before the California Supreme Court. Read complete release here.