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Cambridge, MA Privacy & Surveillance: License Plate Readers (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing chapter
Municipal Code Ch. 2.128
Approval body
City Council, via City Manager report
Data-sharing disclosure
Annual Surveillance Report, by March 1
Council review deadline
Public meeting by May 31
Remedy for violation
Injunctive/declaratory relief only, no damages

Summary

Cambridge treats automatic license plate readers as regulated Surveillance Technology under Municipal Code Chapter 2.128. Before police or any city department acquires, funds, or deploys ALPRs, the City Manager must get City Council approval of a Surveillance Technology Impact Report and use policy.

(A)Acquisition of Surveillance Technology by City Departments Other than the Police Department...the City Manager must submit to the City Council a Surveillance Technology Impact Report...and obtain City Council approval before doing any of the following:(1)Seeking funds for Surveillance Technology, including but not limited to, applying for a grant, or accepting state or federal funds...(2)Acquiring new Surveillance Technology...(4)Entering into an agreement with a non-City entity to acquire, share, or otherwise use Surveillance Technology or the Surveillance Data it provides....(D)(6)Data Retention: The time period, if any, for which information collected by the Surveillance Technology will be routinely retained, the reason that retention period is appropriate to further the purpose(s), the process by which the information is regularly deleted after that period has elapsed...(8)Third-Party Data-Sharing: If and how other City or non-City entities can access or use the Surveillance Data, including any required justification and legal standard necessary to do so, and any obligation(s) imposed on the recipient of the Surveillance Data;

Full Breakdown

020(F)(1)(b)). 030(A) and (B) require the City Manager to submit a Surveillance Technology Impact Report, and, if necessary, a Technology-Specific Surveillance Use Policy, to the City Council and obtain Council approval before seeking grant or federal funds for ALPRs, acquiring the equipment, using it for a new purpose or location, or entering any data-sharing agreement with an outside entity. 030(D) spells out what the required use policy must cover, including a Data Retention provision setting the time period ALPR data is kept and how it is purged, and a Third-Party Data-Sharing provision that must state the legal standard and justification needed before Cambridge shares plate-reader data with any other city or non-city entity, which covers requests from ICE or other federal agencies.

060(B)(2)). The City Council reviews that report at a public meeting by May 31 and can order policy changes or disapprove continued ALPR use if privacy or civil-rights safeguards are inadequate.

Violations & Fines

The ordinance is enforced by the City Manager or a designee (§2.128.080(A)). Anyone injured by a violation may sue the City of Cambridge for injunctive or declaratory relief, but the ordinance bars monetary damages against the City or its employees for any Chapter 2.128 violation. City employees who report a violation are protected from retaliation under the Massachusetts Whistleblower Statute, G.L. c. 149, §185.

Frequently Asked Questions

Does Cambridge police need Council sign-off to use ALPR cameras?
Yes. Section 2.128.030 requires the City Manager to submit a Surveillance Technology Impact Report and obtain City Council approval before the Police Department acquires ALPRs, funds them with a grant, or expands how they're used.
Can Cambridge share license plate data with ICE?
Any data-sharing agreement with a non-city entity, including a federal agency, first requires Council-approved policy language under §2.128.030(D)(8) stating the legal standard for disclosure, and any actual sharing must be disclosed in the Annual Surveillance Report under §2.128.060(B)(2).
How long can Cambridge keep ALPR data?
The Technology-Specific Surveillance Use Policy approved by the Council must set a specific retention period and describe how the data is routinely deleted once that period ends, per §2.128.030(D)(6).

Sources & Official References

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