Adaptive traffic signal preemption

摘要

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.

主权项

1. A method of processing traffic signal priority requests, comprising:
receiving at an intersection, a traffic signal priority request from a vehicle; determining a number of stopped vehicles at the intersection and on an approach to the intersection in response to receiving the priority request; computing an activation threshold as a function of an estimated-time-of-arrival (ETA) threshold and the number of stopped vehicles; determining a vehicle ETA of the vehicle at the intersection in response to the priority request; submitting, in response to the vehicle ETA being less than the activation threshold, the priority request for preemption service processing at the intersection; and bypassing, in response to the vehicle ETA being greater than the activation threshold, submission of the priority request for preemption service processing at the intersection.