Dynamic activation of virtual phase selectors for control of traffic signal preemption

Abstract

According to the disclosed approaches, a server system receives vehicle messages having information transmitted from vehicle processors. Each vehicle message specifies published geographical coordinates that indicate a geographical location of a vehicle. For each vehicle message, the server system determines one or more virtual phase selectors associated with the published geographical coordinates; determines whether each virtual phase selector is active or inactive; starts execution of each virtual phase selector determined to be in inactive; and communicates the vehicle message to the one or more virtual phase selectors. Each virtual phase selector determines traffic signal control data based on the vehicle message and transmits the traffic signal control data to a traffic signal controller associated with the virtual phase selector. The method includes stopping execution of an executing virtual phase selector in response to absence of a vehicle message having published geographical coordinates associated with the executing virtual phase selector for a period that is greater than a threshold period.