Adaptive traffic signal preemption
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United States of America Patent
Stats
-
Mar 29, 2016
Grant Date -
Dec 24, 2015
app pub date -
Jun 19, 2014
filing date -
Jun 19, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The disclosed approaches for processing traffic signal priority requests include receiving traffic signal priority requests from a vehicle. The number of stopped vehicles at the intersection and on an approach to the intersection is determined in response to receiving each priority request. An activation threshold is computed as a function of an estimated-time-of-arrival (ETA) threshold and the number of stopped vehicles. A vehicle ETA of the vehicle at the intersection is determined in response to each priority request. In response to the vehicle ETA being less than the activation threshold, the priority request is submitted for preemption service processing at the intersection. In response to the vehicle ETA being greater than the activation threshold, submission of the priority request is bypassed for preemption service processing at the intersection.
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