Patent ID: 8633833

Claim:
A method for altering traffic signal timing as a function of occluded signal viewing, the method comprising: determining via a processing unit that a view of a traffic signal by a person is obstructed by a large vehicle located on a first ingress path to a roadway intersection with a second ingress path, wherein the traffic signal controls the right of way of the first ingress path, and wherein the person is travelling along the first ingress path toward the intersection and is located behind the large vehicle relative to a view sightline of the person to the traffic signal; in response to the occluded view determination, delaying a transition of the traffic signal for a delay period from a current visual display of a proceed signal to the person to a subsequent visual display of a stop signal to the person, wherein the current proceed signal visually conveys via the view sightline to the person that the person has right of way through the intersection, and wherein the subsequent stop signal visually conveys via the view sightline to the person that the person must stop from proceeding into or through the intersection; and transitioning the traffic signal from visually displaying the proceed signal to visually displaying the stop signal to the person via the view sightline at an end of the delay period.