CONTEXT-BASED TRAFFIC FLOW CONTROL

• US 20130013180A1
• Filed: 07/07/2011
• Published: 01/10/2013
• Est. Priority Date: 07/07/2011
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Lection, David B., Masselle, Eric L.
• Granted Patent: US 8,909,462 B2
• Time in Patent Office: Days
• US Class Current: 701/117
• CPC Class Codes: G08G 1/081 Plural intersections under common control
• CPC Class Codes: G08G 1/087 Override of traffic control, e.g. by signal transmitted by an emergency vehicle

Abstract

Providing traffic flow control services includes receiving requests at an arbiter of a traffic control subsystem. The traffic control subsystem is in a first state, and the requests are received from vehicle transmitters in proximity of the traffic control subsystem. Traffic flow control services also include applying a pre-defined condition to the requests and implementing a traffic flow control activity responsive to application of the pre-defined condition. The traffic flow control activity includes maintaining the first state or changing the first state of the traffic control subsystem to a second state.

Claims

1. A method for providing traffic flow control services, the method comprising:

receiving requests, at an arbiter of a traffic control subsystem, the traffic control subsystem is in a first state, the requests received from vehicle transmitters in proximity of the traffic control subsystem;

applying a pre-defined condition to the requests; and

implementing a traffic flow control activity responsive to application of the pre-defined condition, the traffic flow control activity including one of;

maintaining the first state, and changing the first state of the traffic control subsystem to a second state.

2. The method of claim 1, wherein each of the requests is implemented as a bid representing a number of units, each of the units associated with a monetary value, and the arbiter is configured to receive a bid level corresponding to the number of units generated for each of the requests.

3. The method of claim 2, wherein the traffic control subsystem includes:

an electronic speed sign, the requests specify an appeal to increase the speed limit, and the pre-defined condition is met when a volume of vehicles in a defined area associated with the electronic speed sign meets a threshold level, wherein a current speed limit is the first state and an increased speed limit is the second state; and

an electronic commuter lane sign, the requests specify an appeal to open a commuter lane to all traffic, and the pre-defined condition is met when a volume of vehicles in a defined area associated with the electronic commuter lane sign meets a threshold level, wherein a restriction on a use of commuter lane is the first state and a removal of the restriction on the use of the commuter lane is the second state.

4. The method of claim 2, wherein:

the traffic control subsystem is a set of traffic lights at an intersection, the method further comprising;

appealing, via a portion of the requests from a first set of vehicles facing a first direction at the intersection, to change a traffic light in the set of traffic lights from the first state to the second state; and

appealing, via another portion of the requests from a second set of vehicles facing a second direction at the intersection, to maintain in the first state a traffic light in the set of traffic lights.

5. The method of claim 4, wherein the pre-defined condition includes:

maintaining the first state if an overall monetary value of the bids from the second set of vehicles meets or exceeds an overall monetary value of the bids from the first set of vehicles; and

changing the first state to the second state if an overall monetary value of the bids from the second set of vehicles is less than an overall monetary value of the bids from the first set of vehicles.

6. The method of claim 4, wherein the pre-defined condition includes:

maintaining the first state if a total number of units from the bids received from the second set of vehicles meets or exceeds a total number of units from the bids received from the first set of vehicles; and

changing the first state to the second state if a total number of units from the bids from the second set of vehicles is less than the total number of units from the bids received from the first set of vehicles.

7. The method of claim 4, further comprising:

applying a constraint to the requests, the constraint comprising one of;

a minimum time period in at least one of the first state and the second state;

a maximum time period in at least one of the first state and the second state;

identification of an emergency vehicle in proximity of the traffic control subsystem;

weather conditions detected in proximity of the traffic control subsystem; and

road conditions detected in proximity of the traffic control subsystem; and

implementing the traffic flow control activity responsive to application of the pre-defined condition and the constraint.

8. The method of claim 1, further comprising:

receiving, at the arbiter of the traffic control subsystem, a request from a second arbiter of another traffic control subsystem, the arbiter of the traffic control subsystem and the second arbiter of the other traffic control subsystem forming part of a traffic control system, the traffic control system collectively rendering a decision for a traffic flow control activity based on requests received at multiple traffic control subsystems, and implementing, by each of the multiple traffic control subsystems including the traffic control subsystem and the other traffic control subsystem, the traffic flow control activity associated with the decision.

9. A system for providing traffic flow control services, comprising:

a computer processor; and

logic executable by the computer processor, the logic configured to implement a method, the method comprising;

receiving requests, at an arbiter of a traffic control subsystem, the traffic control subsystem is in a first state, the requests received from vehicle transmitters in proximity of the traffic control subsystem;

applying a pre-defined condition to the requests; and

implementing a traffic flow control activity responsive to application of the pre-defined condition, the traffic flow control activity including one of;

maintaining the first state, and changing the first state of the traffic control subsystem to a second state.

10. The system of claim 9, wherein each of the requests is implemented as a bid representing a number of units, each of the units associated with a monetary value, and the arbiter is configured to receive a bid level corresponding to the number of units generated for each of the requests.

11. The system of claim 10, wherein the traffic control subsystem includes:

an electronic speed sign, the requests specify an appeal to increase the speed limit, and the pre-defined condition is met when a volume of vehicles in a defined area associated with the electronic speed sign meets a threshold level, wherein a current speed limit is the first state and an increased speed limit is the second state; and

an electronic commuter lane sign, the requests specify an appeal to open a commuter lane to all traffic, and the pre-defined condition is met when a volume of vehicles in a defined area associated with the electronic commuter lane sign meets a threshold level, wherein a restriction on a use of commuter lane is the first state and a removal of the restriction on the use of the commuter lane is the second state.

12. The system of claim 10, wherein:

the traffic control subsystem is a set of traffic lights at an intersection, the method further comprising;

appealing, via a portion of the requests from a first set of vehicles facing a first direction at the intersection, to change a traffic light in the set of traffic lights from the first state to the second state; and

appealing, via another portion of the requests from a second set of vehicles facing a second direction at the intersection, to maintain in the first state a traffic light in the set of traffic lights.

13. The system of claim 12, wherein the pre-defined condition includes:

maintaining the first state if an overall monetary value of the bids from the second set of vehicles meets or exceeds an overall monetary value of the bids from the first set of vehicles; and

changing the first state to the second state if an overall monetary value of the bids from the second set of vehicles is less than an overall monetary value of the bids from the first set of vehicles.

14. The system of claim 12, wherein the pre-defined condition includes:

maintaining the first state if a total number of units from the bids received from the second set of vehicles meets or exceeds a total number of units from the bids received from the first set of vehicles; and

changing the first state to the second state if a total number of units from the bids from the second set of vehicles is less than the total number of units from the bids received from the first set of vehicles.

15. The system of claim 12, wherein the logic is further configured to implement:

applying a constraint to the requests, the constraint comprising one of;

a minimum time period in at least one of the first state and the second state;

a maximum time period in at least one of the first state and the second state;

identification of an emergency vehicle in proximity of the traffic control subsystem;

weather conditions detected in proximity of the traffic control subsystem; and

road conditions detected in proximity of the traffic control subsystem; and

implementing the traffic flow control activity responsive to application of the pre-defined condition and the constraint.

16. The system of claim 9, wherein the logic is further configured to implement:

receiving, at the arbiter of the traffic control subsystem, a request from a second arbiter of another traffic control subsystem, the arbiter of the traffic control subsystem and the second arbiter of the other traffic control subsystem forming part of a traffic control system, the traffic control system collectively rendering a decision for a traffic flow control activity based on requests received at multiple traffic control subsystems, and implementing, by each of the multiple traffic control subsystems including the traffic control subsystem and the other traffic control subsystem, the traffic flow control activity associated with the decision.

17. A computer program product for providing traffic flow control services, the computer program product comprising a storage medium embodied with instructions, which when executed by a computer cause the computer to implement a method, the method comprising:

receiving requests, at an arbiter of a traffic control subsystem, the traffic control subsystem is in a first state, the requests received from vehicle transmitters in proximity of the traffic control subsystem;

applying a pre-defined condition to the requests; and

implementing a traffic flow control activity responsive to application of the pre-defined condition, the traffic flow control activity including one of;

maintaining the first state, and changing the first state of the traffic control subsystem to a second state.

18. The computer program product of claim 17, wherein each of the requests is implemented as a bid representing a number of units, each of the units associated with a monetary value, and the arbiter is configured to receive a bid level corresponding to the number of units generated for each of the requests.

19. The computer program product of claim 18, wherein the traffic control subsystem includes:

an electronic speed sign, the requests specify an appeal to increase the speed limit, and the pre-defined condition is met when a volume of vehicles in a defined area associated with the electronic speed sign meets a threshold level, wherein a current speed limit is the first state and an increased speed limit is the second state; and

an electronic commuter lane sign, the requests specify an appeal to open a commuter lane to all traffic, and the pre-defined condition is met when a volume of vehicles in a defined area associated with the electronic commuter lane sign meets a threshold level, wherein a restriction on a use of commuter lane is the first state and a removal of the restriction on the use of the commuter lane is the second state.

20. The computer program product of claim 17, further comprising instructions for implementing:

receiving, at the arbiter of the traffic control subsystem, a request from a second arbiter of another traffic control subsystem, the arbiter of the traffic control subsystem and the second arbiter of the other traffic control subsystem forming part of a traffic control system, the traffic control system collectively rendering a decision for a traffic flow control activity based on requests received at multiple traffic control subsystems, and implementing, by each of the multiple traffic control subsystems including the traffic control subsystem and the other traffic control subsystem, the traffic flow control activity associated with the decision.