Automated License Plate Reader (ALPR) - Adoption, Use, and Data Retention Policies (Carroll County Sheriffs Office)

Dave Maass filed this request with the Carroll County Sheriffs Office of Westminster, MD.
Multi Request Automated License Plate Reader (ALPR) - Adoption, Use, and Data Retention Policies
Est. Completion None
Fix Required


From: Dave Maass

To Whom It May Concern:

Pursuant to the Maryland Public Information Act, I hereby request the following records:

Materials related to this agency's acquisition of, access to, preservation of, or disclosure of automated license plate readers (ALPR) or ALPR data:

1. Policies related to the adoption of ALPR technology, including those guiding the procurement process or necessary administrative obligations before acquisition.

2. Training policies, requirements, and materials for automatic license plate reader system operators.

3. Databases used to compare data obtained by the automatic license plate reader system.

4. Policies related to the retention and security of captured ALPR data, including those regarding:
- the length of time after capture that data may be preserved
- exceptions to general data preservation policies
- internal data security and access
- data destruction

5. Policies related to the sharing of captured ALPR data by this agency with other agencies, including those directing:
- the manner in which another agency may request data
- the circumstances under which captured data may be shared, and
- the responsibilities of the recipient agency in regards to data retention and use.
- access by this agency to data obtained by automatic license plate reader systems not operated by the law enforcement agency.

Please also provide the number of requests made by outside agencies, if applicable.

6. Policies related to the sale of data or the sharing of data with non-law enforcement actors.
- If applicable, please provide all agreements between this agency and non-law enforcement actors.

7. Policies regarding oversight of automatic license plate reader system use.

8. Audit Reports

9. Policies related to maintenance and calibration.

Please also provide maintenance and calibration schedules and records for the system on file.

10. Any other policies or reports on subjects related to automatic license plate reader system use by the agency.

The requested documents will be made available to the general public, and this request is not being made for commercial purposes.

In the event that there are fees, I would be grateful if you would inform me of the total charges in advance of fulfilling my request. I would prefer the request filled electronically, by e-mail attachment if available or CD-ROM if not.

Thank you in advance for your anticipated cooperation in this matter. I look forward to receiving your response to this request within 10 calendar days, as the statute requires.


Dave Maass

From: Carroll County Sheriffs Office

Good Morning Dave Maass:

I am the Custodian of Records for the Carroll County Sheriff's Office. I am working on your request at this time. All data collected by the ALPR will be stored locally for a preset period of time, not to exceed 24 hours, for investigative purposes, after which the data is automatically erased from the local system. Collected data is also transmitted automatically to the Maryland Coordination and Analysis Center, where the data becomes subject to their policies on use and retention. I believe I sent you the contact person in the email I sent you last month. I should have the CCSO policy and training information to you in a few days. If you have any questions, please direct your responses to me. Thank you.


Sgt. Jesse DiMura

From: Carroll County Sheriffs Office

Mr. Maass:

I am waiving the fee for this time only.

From: Carroll County Sheriffs Office


I sent you the information via email ( on 1/11/2019. I will not send it again until you answer this email so I know that your email address is good.


Sgt. Jesse DiMura, #0263
Carroll County Sheriff's Office
Warrant Unit Supervisor/Custodian of Records
CJIS Security Coordinator/NCIC Instructor
New Email as of August 1, 2018