California ALPR law (2015)
California lawmakers passed SB 34, one of the first state laws restricting automatic license plate reader data. It required agencies to limit how long they keep plate data, restrict who they share it with, and report on their use.
California agencies had to adopt written ALPR use policies and faced penalties for misuse.
The law became a model for other states and for ACLU model legislation.
Shows the state-level path the ACLU now urges in Michigan, where more than 125 communities use ALPRs with no statewide rules.
