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ORWELL INDEX

California law

SB 34

Automated license plate recognition systems

Citation
Civil Code 1798.90.5 and following
Enacted
Status
In force
Governs
License plate readers

What it requires

License plate readers

An agency operating a system must adopt a usage and privacy policy and post it conspicuously on its website. The policy must state the authorised purposes for collecting the data, who may access the system, how long the information is kept and how it is destroyed. The agency must also keep a record of who accessed the data and why.

Source: California SB 34 (2015), Civil Code 1798.90.5 and following, accessed 17 Aug 2026

Senate Bill 34 took effect in 2016. It applies to any operator of an automated license plate recognition system, public agency or private company, and to anyone who sells or shares the data.[1] The requirements it places on an operator are summarized above, with the statute cited.

SB 34 sets no maximum retention period.[1] It does not require a vote before a system is bought, but a public agency must take public comment at a regular meeting of its governing body before it starts using one.[1] That meeting is the moment residents can act on.

The policy is the floor this page checks. An agency can comply with SB 34 and still run a system that few residents know about. Whether a policy exists is a fact we can record; what the program behind it does is documented on each county’s pages.

Agencies with a policy on record

Agency County Policy Checked
Amador County Sheriff's Office Amador County On file 20 Aug 2026
Butte County Sheriff's Office Butte County On file 22 Aug 2026
Chico Police Department Butte County Posted 22 Aug 2026
Oroville Police Department Butte County Not found on the site 22 Aug 2026
Angels Camp Police Department Calaveras County On file, not posted 16 Aug 2026
Antioch Police Department Contra Costa County On file 23 Aug 2026
Concord Police Department Contra Costa County Posted 23 Aug 2026
Contra Costa County Office of the Sheriff Contra Costa County Posted 23 Aug 2026
Richmond Police Department Contra Costa County On file 23 Aug 2026
El Dorado County Sheriff's Office El Dorado County On file 22 Aug 2026
El Dorado Hills Community Services District El Dorado County On file 22 Aug 2026
South Lake Tahoe Police Department El Dorado County On file 22 Aug 2026
Marin County Sheriff's Office Marin County On file, not posted 23 Aug 2026
Tiburon Police Department Marin County Posted 23 Aug 2026
Merced County Sheriff's Office Merced County On file 19 Aug 2026
Merced Police Department Merced County On file 19 Aug 2026
UC Merced Transportation and Parking Services Merced County On file 19 Aug 2026
University of California, Merced Police Department Merced County On file 19 Aug 2026
Mono County Sheriff's Office Mono County On file 20 Aug 2026
Napa County Sheriff's Office Napa County On file 23 Aug 2026
Napa Police Department Napa County Posted 23 Aug 2026
Grass Valley Police Department Nevada County On file 22 Aug 2026
Truckee Police Department Nevada County Posted 22 Aug 2026
Auburn Police Department Placer County On file 23 Aug 2026
Placer County Sheriff's Office Placer County On file 23 Aug 2026
Rocklin Police Department Placer County Not found on the site 23 Aug 2026
Roseville Police Department Placer County On file 23 Aug 2026
San Francisco Police Department San Francisco County Posted 24 Aug 2026
San Joaquin County Sheriff's Office San Joaquin County Posted 23 Aug 2026
San Mateo County Sheriff's Office San Mateo County Posted 24 Aug 2026
Capitola Police Department Santa Cruz County Not found on the site 23 Aug 2026
Santa Cruz Police Department Santa Cruz County On file 23 Aug 2026
Watsonville Police Department Santa Cruz County On file 23 Aug 2026
Anderson Police Department Shasta County Posted 19 Aug 2026
Redding Police Department Shasta County Posted 19 Aug 2026
Shasta County Sheriff's Office Shasta County Posted 19 Aug 2026
Vallejo Police Department Solano County On file 23 Aug 2026
Cloverdale Police Department Sonoma County On file 23 Aug 2026
Healdsburg Police Department Sonoma County Posted 23 Aug 2026
Rohnert Park Department of Public Safety Sonoma County On file 23 Aug 2026
Davis Police Department Yolo County On file 23 Aug 2026
Woodland Police Department Yolo County On file 23 Aug 2026
Yolo County Sheriff's Office Yolo County Posted 23 Aug 2026

"Posted" means the policy is published where the law requires it. "On file" means we hold the document. "Not posted" and "not found" mean we could not find it on the agency's own website on the date shown; they say nothing about how the system is used. An agency with a dash has not been checked, which is not a finding.

Where this technology is documented

What you can do

Ask your agency for the policy this law requires, and watch the agenda of the body that approves it. The California page lists every county we cover and how far each has been researched.

Each technology page explains what the system records and what reduces your exposure to it: License plate readers .

Sources

  1. 1.
    California SB 34 (2015), Civil Code 1798.90.5 and following · Law · · accessed · archived copy