License plate readers are legal in Texas. The state has no statute that authorizes or prohibits automated license plate readers, so police departments, toll authorities, private investigators, repossession agents, and even some homeowners associations can photograph your plate, log the time and GPS location, and store that record under their own policies. Federal law fills in a few gaps, but there is no single Texas rule telling anyone how long to keep the data or who can search it.
No Texas Statute Governs ALPRs
The Texas Legislature has considered restrictions. HB 3999 would have limited ALPR use but failed to advance, and as of 2026 no ALPR-specific law has been enacted. That absence is the whole story: the technology operates under general police powers for law enforcement, the private security licensing framework for commercial operators, and federal privacy law for certain downstream uses of DMV data.
Congress has not filled the gap either. A Congressional Research Service report confirmed that no federal legislative framework governs ALPR use by law enforcement, though agencies that access criminal justice databases must follow the FBI’s Criminal Justice Information Services (CJIS) Security Policy when handling plate data.1Congressional Research Service. Law Enforcement and Technology: Use of Automated License Plate Readers The Texas Department of Public Safety runs a voluntary coordination program, not a binding statewide mandate.
Who Is Scanning Your Plate in Texas
Police Agencies
State, county, and municipal departments are the biggest users. Cameras mount on patrol vehicles, highway overpasses, and intersections, checking each plate against hotlists of stolen vehicles, active warrants, AMBER Alerts, and other criminal justice entries. Agencies that join the DPS License Plate Reader Program share their reads with the state and pull hotlists from the Texas Crime Information Center (updated hourly) and the National Crime Information Center (updated twice daily).2Texas Department of Public Safety. Texas License Plate Reader Program
Toll Authorities
Every toll road in Texas uses plate cameras. Vehicles without an electronic tag get a pay-by-mail invoice generated from the camera image, and tagged vehicles still have their plates photographed as a backup to the electronic reader.3Central Texas Regional Mobility Authority. Electronic Tag NTTA, HCTRA, and the Central Texas Regional Mobility Authority keep those records for billing and enforcement whether or not you have a tag account.
Private Investigators and Repossession Agents
Private operators fall under the state’s private security licensing framework. Texas Occupations Code Section 1702.104 defines an “investigations company” to include anyone in the business of furnishing information about a person’s location or movement, recovering lost or stolen property, or electronically tracking the location of a motor vehicle for non-criminal-justice purposes.4State of Texas. Texas Occupations Code Title 10 Chapter 1702 – Section 1702.104 That language covers ALPR-equipped repossession and skip-tracing firms, which need a DPS license. These companies cruise parking lots and commercial areas building databases of plate sightings that they sell to lenders. The volume often dwarfs what any single police department collects.
Homeowners Associations
A growing number of gated communities install plate cameras at entrances. No Texas statute specifically addresses HOA-deployed ALPRs, so these installations are governed by the community’s own governing documents rather than state law.
What the Fourth Amendment Does and Does Not Protect
Courts have long held that motorists have a reduced expectation of privacy in a vehicle because it “travels public thoroughfares where both its occupants and its contents are in plain view.”5Justia. U.S. Constitution Annotated – Vehicular Searches A single photograph of a plate displayed on the outside of a car on a public road has not been treated as a search requiring a warrant.
The 2018 Supreme Court decision in Carpenter v. United States unsettled that rule for large-scale data collection. Carpenter held that accessing seven days of cell-site location data was a search because the volume and duration of the records could reveal intimate details of a person’s life. Lower courts have begun applying similar logic to ALPR data. A Virginia circuit court suppressed ALPR evidence in 2024 on that reasoning. The Ninth Circuit found no Fourth Amendment problem with nine days of ALPR data but acknowledged in a concurrence that the technology “may eventually present the same problems addressed in Carpenter.”
No Texas appellate court has ruled on whether long-term ALPR data collection triggers Carpenter protections. For now, a single scan almost certainly does not require a warrant, but aggregated location histories built from months or years of scans may eventually face constitutional limits. The law is actively evolving.
How Long Your Data Is Kept
Texas has no statewide retention limit for ALPR records. The DPS program requires participating agencies to maintain written retention policies, but DPS does not dictate what those policies must say.2Texas Department of Public Safety. Texas License Plate Reader Program Retention windows across Texas agencies run from roughly 30 days to two years or longer. Some departments purge non-hit data within a few months; others keep every read indefinitely. The vendor’s default settings often drive actual retention as much as the written policy does.
Most Texas law enforcement agencies do not build their own ALPR infrastructure. They contract with vendors who provide the cameras, software, and cloud storage, which means your plate data often lives on a commercial company’s servers rather than on agency hardware. Who controls that data and under what terms it can be accessed are questions Texas law has not answered.
The Federal Privacy Protection You Do Have
The federal Driver’s Privacy Protection Act (DPPA) restricts what state motor vehicle departments can do with personal information tied to license plate records. Under 18 U.S.C. § 2721, a state DMV and its employees and contractors cannot knowingly disclose personal information from motor vehicle records except for specific permitted purposes, including use by government agencies, motor vehicle safety and theft matters, and limited business uses like verifying information or pursuing debts.6Office of the Law Revision Counsel. 18 U.S. Code 2721 – Prohibition on Release and Use of Certain Personal Information From State Motor Vehicle Records
The DPPA has real enforcement weight. Anyone who knowingly obtains or discloses motor vehicle record information for an unauthorized purpose faces civil liability of at least $2,500 per violation in liquidated damages, plus punitive damages for willful or reckless conduct and reasonable attorney fees.7Office of the Law Revision Counsel. 18 U.S. Code 2724 – Civil Action A breach touching thousands of records can produce enormous aggregate liability.
There is a critical gap. The DPPA governs information held by state DMVs, not the raw plate-scan data collected by ALPR cameras. A log showing your plate at a particular intersection at a particular time is not a “motor vehicle record” in the DPPA sense. The statute prevents someone from linking your plate number to your home address through DMV records, but it does not directly regulate the location data that ALPRs generate. That is where the absence of a Texas-specific ALPR statute matters most.
Can You Find Out What Has Been Collected About You?
The Texas Public Information Act (Chapter 552 of the Government Code) gives you the right to request government records, and the officer handling your request cannot ask why you want them.8Texas Comptroller of Public Accounts. The Public Information Act You can request information about an agency’s ALPR program such as its retention policy or program statistics.
In practice, agencies frequently invoke the law enforcement exception in Section 552.108 to withhold ALPR data tied to investigations. That provision exempts information related to the detection, investigation, or prosecution of crime when release would interfere with those activities.9Office of the Attorney General of Texas. Overview of the Public Information Act A request for your own plate-scan history will almost certainly be denied if the data touches any active case or is classified as an internal law enforcement record. Even general program statistics can be withheld if the agency argues disclosure would compromise investigative methods.
Texas does not require signs warning that ALPRs are active in a given area. There is no opt-out mechanism. If you drive on a public road, your plate can be scanned and logged without any notice to you.
If You Are Stopped Because of a Plate Reader Hit
ALPRs misread plates more often than their proponents suggest. A study by one tolling authority found a misread rate of 20%, and separate research documented that ALPRs misread the issuing state on roughly one in ten plates.10AAMVA. Best Practices Guide for Improving ALPR Character confusion drives most errors, with cameras reading a “3” as a “7” or an “H” as an “M.” Outdated hotlists make it worse when a recovered stolen vehicle is never removed from the database.
When a false hit triggers a high-risk traffic stop, the consequences are not abstract. Drivers have been ordered out of their vehicles at gunpoint, handcuffed on the pavement, and detained while officers sorted out the mistake. Lawsuits over wrongful ALPR detentions have produced significant settlements. Officers are supposed to verify ALPR alerts against the actual plate before escalating; that step gets skipped more often than agencies admit.
If you are pulled over based on an ALPR hit, your rights are the same as in any traffic stop. You do not have to consent to a vehicle search, and you can ask whether you are free to leave. Document the encounter — the officers’ names, badge numbers, and what they told you about why you were stopped — if you later need to pursue a complaint or civil claim.
The Bottom Line for Texas Drivers
If you drive regularly in a Texas metro area, your plate is being photographed hundreds of times per month. That data flows into agency databases, vendor cloud platforms, and potentially federal systems, without a single statewide law governing how long it is kept or who can search it. The DPS coordination program adds some structure for participating police agencies, but it is voluntary and does not reach private operators, toll authorities, or HOAs. Until Texas enacts ALPR-specific legislation, agency policy and the limited federal fallback are what stands between your travel history and anyone with database access.