Railway safety notification system and device with proportional warnings
US12304538B2 · kind B2 · utility
0Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2020 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Apr 2, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L2205/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Systems and devices that will notify train system maintenance workers of an approaching vehicle and, conversely, will notify the operators and administrators of train systems of train system maintenance workers within the vicinity of an approaching section of track. Embodiments of the safety systems and methods disclosed herein may use proportional warnings based on the speed or proximity of approaching vehicles as well as the specific location of such approaching vehicles relative to worker positions to help avoid worker warning fatigue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.