Mon Jan 1, 0001

Digital License Plates, V2X, and Private ALPR

Digital License Plates (Reviver)

What They Are

Reviver is sole company with FCC-approved digital plates (“RPlate”). E-ink display with built-in GPS and cellular connectivity. Can be remotely updated to display “STOLEN,” show custom messages (parked mode), auto-renew registration.

California, Arizona, Michigan, Texas (as of early 2025). Additional states considering.

Data Collection

System logs vehicle location, timestamps, can track speed. Plate communicates with Reviver’s cloud platform. Privacy policy permits sharing with law enforcement pursuant to valid legal process.

Cost

Battery model: ~$19.95/month. Hardwired: ~$24.99/month. Hardware: ~$700-1000.

Scale

~65,000+ plates deployed as of late 2024.

Breach

December 2023: Reviver confirmed unauthorized access to systems — exposing risks of centralized plate-tracking database.

vs. Traditional Plates

Metal plate is passive — reveals nothing unless observed. Reviver plate actively transmits location to a private company’s servers.

V2X (Vehicle-to-Everything)

NHTSA Proposed Rule (August 2024)

NPRM proposing V2X (specifically V2V) mandates for new light vehicles.

What V2X Broadcasts

Basic Safety Messages (BSMs) containing: position, speed, heading, acceleration, brake status, vehicle size. Broadcast 10 times per second.

Technology

FCC reallocated most of 5.9 GHz band (2020), favoring C-V2X (cellular-based, 3GPP standard) over original DSRC (802.11p). Automakers and telecoms back C-V2X.

Pseudonymous Certificates

BSMs use rotating pseudonymous certificates via Security Credential Management System. Researchers have demonstrated re-identification attacks.

Timeline

Potential compliance: model year 2028-2029 (subject to political/industry shifts).

Private ALPR Networks

Who Operates Them

HOAs, apartment complexes, shopping centers, gated communities, business improvement districts. Flock Safety sells to private entities — operates in 5,000+ communities.

Data Sharing with Police

Flock explicitly markets law enforcement data-sharing as a feature. Private purchasers can opt into sharing reads with police; many do by default.

Apartment Complexes

ALPR for parking enforcement generates de facto resident movement logs: entry/exit timestamps for every vehicle. Flock default retention: 30 days (configurable).

Courts generally hold license plates in public/semi-public spaces carry no reasonable expectation of privacy (United States v. Ellison). Virginia briefly banned private ALPR (2015), reversed. No federal regulation governs private ALPR data retention or sharing.

EFF and ACLU have raised Fourth Amendment concerns.

Sources

  • Reviver company disclosures and privacy policy
  • NHTSA NPRM (August 2024)
  • Flock Safety marketing materials and partnerships
  • EFF on private ALPR