Abstract
This disclosure describes a method for warning vehicles that an at-risk road user (such as a child, an older adult, or a person who is deaf or blind) is likely present on a low-speed local street, without revealing the individual's identity or even their vulnerability category. An opt-in device or function emits no identifier and no vulnerability fact; presence is spatially and temporally rounded, aggregated under a k-anonymity threshold, and delivered to vehicles as a coarse area-level caution flag over existing navigation or roadside infrastructure. The document enumerates device form factors, anonymization techniques, delivery paths, false-positive suppression, and a bidirectional variant that warns the at-risk person. It is published as prior art so that this public-interest safety layer cannot be enclosed by any single party.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Imayama, Kota, "Minimal-Disclosure Presence Notification of At-Risk Road Users on Local Streets", Technical Disclosure Commons, (June 23, 2026)
https://www.tdcommons.org/dpubs_series/10532