A traffic signal control method and system reduces the delay time of a
transit vehicle at an intersection by incorporating an automatic vehicle
location (AVL) system to trigger a traffic signal priority (TSP) strategy
with a chain of mobile events to determine the correct timing, location,
conditions, and/or other mobile events that may trigger a TSP action. The
traffic signal control can also be used to notify vehicle status in
passenger/traveler information systems such as street signs, to monitor
the wait time at an intersection or bus stop, and in any application that
relates to vehicle entry into a given location and a consequence of
actions that may be associated with the location.