SIGNAL ASPECT ENFORCEMENT
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United States of America
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N/A
Issued Date -
Apr 22, 2021
app pub date -
Oct 16, 2020
filing date -
Oct 16, 2020
priority date (Note) -
Published
status (Latency Note)
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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.
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