Adaptive traffic signal phase change system
First Claim
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1. An interactive vehicle traffic flow control system comprising:
- a) At least one vehicle, said vehicle having a method of uniquely and remotely identifying said vehicle'"'"'s real time identity and location;
b) At least one controllable traffic signal;
c) At least one roadside equipment to capture said vehicle'"'"'s method of uniquely and remotely identifying said vehicle'"'"'s real time identity and location, wherein said roadside equipment is in data communication with said vehicle;
d) At least one adaptive signal processor connected to said roadside equipment to process said vehicle'"'"'s method of uniquely and remotely identifying said vehicle'"'"'s real time identity and location, wherein said adaptive signal processor calculates the optimum signal phase change time for said controllable traffic signal based on the unique identity and location of said vehicle; and
e) At least one signal controller, connected to said adaptive signal processor, and connected to said traffic signal, wherein said signal controller responds to instructions from said adaptive signal processor and changes said phase timing in said traffic signal so as to minimize traffic delays.
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Abstract
This patent provides a process that utilizes the vehicle to infrastructure communication process to gather anonymous vehicle trajectories that describe vehicles approaching a signalized intersection. This information is used to project forward in-time the positions of vehicles to calculate the optimal time to change the traffic signal at a point that will minimize the delay to the traffic.
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Citations
20 Claims
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1. An interactive vehicle traffic flow control system comprising:
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a) At least one vehicle, said vehicle having a method of uniquely and remotely identifying said vehicle'"'"'s real time identity and location; b) At least one controllable traffic signal; c) At least one roadside equipment to capture said vehicle'"'"'s method of uniquely and remotely identifying said vehicle'"'"'s real time identity and location, wherein said roadside equipment is in data communication with said vehicle; d) At least one adaptive signal processor connected to said roadside equipment to process said vehicle'"'"'s method of uniquely and remotely identifying said vehicle'"'"'s real time identity and location, wherein said adaptive signal processor calculates the optimum signal phase change time for said controllable traffic signal based on the unique identity and location of said vehicle; and e) At least one signal controller, connected to said adaptive signal processor, and connected to said traffic signal, wherein said signal controller responds to instructions from said adaptive signal processor and changes said phase timing in said traffic signal so as to minimize traffic delays. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20)
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18. An interactive vehicle traffic flow control system comprising the steps of:
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a) Detecting at least one vehicle, said vehicle having a method of uniquely and remotely identifying said vehicle'"'"'s real time identity and location; b) Having at least one controllable traffic signal; c) Using at least one roadside equipment to capture said vehicle'"'"'s method of uniquely and remotely identifying said vehicle'"'"'s real time identity and location, wherein said roadside equipment is in data communication with said vehicle; d) Using at least one adaptive signal processor connected to said roadside equipment to process said vehicle'"'"'s method of uniquely and remotely identifying said vehicle'"'"'s real time identity and location, wherein said adaptive signal processor calculates the optimum signal phase change time for said controllable traffic signal based on the unique identity and location of said vehicle; and e) Using at least one signal controller, connected to said adaptive signal processor, and connected to said traffic signal, wherein said signal controller responds to instructions from said adaptive signal processor and changes said phase timing in said traffic signal so as to minimize traffic delays.
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Specification