Signal aspect enforcement
US11866080B2 · kind B2 · utility
0Cited by
15References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2020 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Jan 3, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L2207/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A signal aspect enforcement method for a rail vehicle includes determining if vehicle position is unknown. The system determines if rail vehicle speed is less than a line-of-sight threshold speed. The system determines the grade of the rail. A worst-case braking distance of rail vehicle is calculated. The signal aspect is determined using a camera system and a beacon system. The system determines if the signal aspect determined by camera system is same as signal aspect determined by beacon system and, if so, determines the route of rail vehicle and speed limit of rail vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.