What Happened?

Your car's license plate may be photographed, logged, and stored every time you drive past a police camera, and right now no federal law governs how that data is collected, shared, or kept. A Congressional Research Service report published Sept. 3 lays out the gap: automated license plate readers (ALPRs) are already deployed widely by law enforcement across the country, but Congress has not passed a single law specifically regulating how police agencies use them.

ALPRs photograph passing vehicles and use software to convert plate characters into searchable data. Each scan can record GPS location, vehicle type, color, and a timestamp. Over time, that data can map where a vehicle has been.

Why Does it Matter to Me?

Courts have generally ruled that driving on a public road does not carry a reasonable expectation of privacy, so police use of ALPRs is largely legal today.

Law enforcement agencies use ALPRs to gather intelligence, identify potential suspects, and analyze crime scenes, the Congressional Research Service (CRS) report notes. The technology can also be paired with facial recognition software to identify individuals. One company, Flock Safety, operates an ALPR network and has updated its privacy and security practices, according to the CRS report.

At least eight Washington state law enforcement agencies enabled direct sharing of their ALPR data with U.S. Border Patrol at some point during 2025, according to a press release from Rep. Keith Self. Washington state law prohibits using ALPRs for immigration enforcement, but the data-sharing still occurred.

Both Sides, Now

Several bills now pending in Congress take different approaches. Some would place broad prohibitions on federal agencies and require reporting on surveillance practices. Others focus on better integrating the technology into law enforcement operations. The CRS report does not take a position on which approach is correct.

Supporters of tighter rules argue the current patchwork of state laws and private vendor policies leaves too many gaps, particularly as the technology expands beyond traffic enforcement into immigration and criminal investigations. Those who favor broader use argue ALPRs are a proven tool for solving crimes and keeping communities safe.

No single federal bill has passed, and state rules vary widely. The result is that what police can do with your plate data depends heavily on where you live.

What Happens Next?

Multiple bills are pending in Congress, but none has cleared both chambers. For any new rule to take effect, a bill would need to pass the House, pass the Senate, and be signed by the president. Congressional leaders and committee chairs hold the power to schedule votes or let the bills stall. There is no vote currently scheduled, and the CRS report signals the debate is still in early stages.

---

Spot something wrong? Report an issue with this article