Traffic management based on basic safety message data

• US 10,395,521 B2
• Filed: 03/05/2018
• Issued: 08/27/2019
• Est. Priority Date: 03/22/2016
• Status: Expired due to Fees

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Bansal, Gaurav, Lu, Hongsheng, Kenney, John, Nakanishi, Toru
• Primary Examiner(s): Brushaber, Frederick M
• Application Number:
  US15/912,297
• Publication Number:
  US 20180204449A1
• Time in Patent Office: 540 Days
• CPC Class Codes: G08G 1/0112 from the vehicle, e.g. floating car data [FCD]
• CPC Class Codes: G08G 1/0125 Traffic data processing
• CPC Class Codes: G08G 1/0129 for creating historical data or processing based on historical data
• CPC Class Codes: G08G 1/0133 for classifying traffic situation
• CPC Class Codes: G08G 1/0145 for active traffic flow control
• CPC Class Codes: G08G 1/052 with provision for determining speed or overspeed speed measuring in general G01P
• CPC Class Codes: G08G 1/08 according to detected number or speed of vehicles

Abstract

The disclosure includes a system and method for managing traffic in a roadway system based on Basic Safety Message data (“BSM data”) included in a set of Basic Safety Messages (“BSMs”). The method may include wirelessly receiving a set of BSMs describing a set of vehicles traveling along the roadway system. Each BSM included in the set of BSMs may describe a specific vehicle included in the set of vehicles, including that vehicle'"'"'s lane, speed and heading of travel. The method may include analyzing the BSM data to determine whether there is an imbalance of traffic flow among a first set of vehicles traveling towards a first heading and a second set of vehicles traveling towards a second heading. The method may include determining that the bidirectional lane will be reconfigured so that traffic in the bidirectional lane flows towards the second heading based on the imbalance of traffic flow.

Claims

1. A method of managing traffic lanes, including a first lane having traffic flowing towards a first heading, a second lane having traffic flowing towards a second heading, and a third lane that is configurable to have traffic flowing towards either the first heading or the second heading, wherein the first heading is different from the second heading, the method comprising:

wirelessly receiving, by a dedicated short range communication (“

DSRC”

) antenna, messages from vehicles traveling on the first lane, the second lane, or the third lane, wherein each message includes data describing a particular lane of travel for a specific vehicle, a speed of travel for the specific vehicle, and a heading of travel for the specific vehicle;

determining, by a processor, based on the messages, that traffic in the first lane flowing towards the first heading and traffic in the second lane flowing towards the second heading are imbalanced; and

controlling, by the DSRC antenna, a traffic light to reconfigure the traffic light to allow traffic in the third lane to change flow towards a different heading from an initial heading.

2. The method of claim 1, wherein the messages are basic safety messages (“

BSMs”

).

3. The method of claim 1, wherein determining that traffic in the first lane flowing towards the first heading and traffic in the second lane flowing towards the second heading are imbalanced is based on:

analyzing the data to determine a first value for an Average Differential Speed Among Opposing Lanes of traffic (“

ADSAOL”

); and

analyzing the ADSAOL to determine whether reconfiguring the third lane to change flow towards the different heading would result in a second value for the ADSAOL that is closer to zero when compared to the first value.

4. The method of claim 3, wherein the third lane is reconfigured if doing so would result in the second value being substantially zero.

5. The method of claim 3, wherein analyzing the data to determine the first value for the ADSAOL includes determining that the first value for the ADSAOL exceeds a threshold value.

6. The method of claim 1, wherein the second lane includes a feeder point that delivers traffic traveling in the second lane.

7. The method of claim 1, further comprising:

determining, based on a hysteresis setting, that the traffic light for the third lane has been reconfigured a maximum number of times for a predetermined time period; and

denying a request to reconfigure the traffic light for the third lane until the predetermined time period ends.

8. A non-transitory computer-readable medium of managing traffic lanes, including a first lane having traffic flowing towards a first heading, a second lane having traffic flowing towards a second heading, and a third lane that is configurable to have traffic flowing towards either the first heading or the second heading, wherein the first heading is different from the second heading, the computer-readable medium having computer instructions stored thereon that are executable by a processing device to perform or control performance of steps comprising:

wirelessly receiving, by a dedicated short range communication (“

DSRC”

) antenna, messages from vehicles traveling on the first lane, the second lane, or the third lane, wherein each message includes data describing a particular lane of travel for a specific vehicle, a speed of travel for the specific vehicle, and a heading of travel for the specific vehicle;

determining, by a processor, based on the messages, that traffic in the first lane flowing towards the first heading and traffic in the second lane flowing towards the second heading are imbalanced; and

controlling, by the DSRC antenna, a traffic light to reconfigure the traffic light to allow traffic in the third lane to change flow towards a different heading from an initial heading.

9. The non-transitory computer-readable medium of claim 8, wherein the messages are basic safety messages (“

BSMs”

).

10. The non-transitory computer-readable medium of claim 8, wherein determining that traffic in the first lane flowing towards the first heading and traffic in the second lane flowing towards the second heading are imbalanced is based on:

analyzing the data to determine a first value for an Average Differential Speed Among Opposing Lanes of traffic (“

ADSAOL”

); and

analyzing the ADSAOL to determine whether reconfiguring the third lane to change flow towards the different heading would result in a second value for the ADSAOL that is closer to zero when compared to the first value.

11. The non-transitory computer-readable medium of claim 10, wherein the third lane is reconfigured if doing so would result in the second value being substantially zero.

12. The non-transitory computer-readable medium of claim 10, wherein analyzing the data to determine the first value for the ADSAOL includes determining that the first value for the ADSAOL exceeds a threshold value.

13. The non-transitory computer-readable medium of claim 8, wherein the second lane includes a feeder point that delivers traffic traveling in the second lane.

14. The non-transitory computer-readable medium of claim 8, the steps further comprising:

determining, based on a hysteresis setting, that the traffic light for the third lane has been reconfigured a maximum number of times for a predetermined time period; and

denying a request to reconfigure the traffic light for the third lane until the predetermined time period ends.

15. A system of managing traffic lanes, including a first lane having traffic flowing towards a first heading, a second lane having traffic flowing towards a second heading, and a third lane that is configurable to have traffic flowing towards either the first heading or the second heading, wherein the first heading is different from the second heading, the system comprising:

a memory storing instructions that, when executed by a processor, cause the system to;

wirelessly receive, by a dedicated short range communication (“

DSRC”

) antenna, messages from vehicles traveling on the first lane, the second lane, or the third lane, wherein each message includes data describing a particular lane of travel for a specific vehicle, a speed of travel for the specific vehicle, and a heading of travel for the specific vehicle;

determine based on the messages, that traffic in the first lane flowing towards the first heading and traffic in the second lane flowing towards the second heading are imbalanced; and

control, by the DSRC antenna, a traffic light to reconfigure the traffic light to allow traffic in the third lane to change flow towards a different heading from an initial heading.

16. The system of claim 15, wherein the messages are basic safety messages (“

BSMs”

).

17. The system of claim 15, wherein determining that traffic in the first lane flowing towards the first heading and traffic in the second lane flowing towards the second heading are imbalanced is based on:

analyzing the data to determine a first value for an Average Differential Speed Among Opposing Lanes of traffic (“

ADSAOL”

); and

analyzing the ADSAOL to determine whether reconfiguring the third lane to change flow towards the different heading would result in a second value for the ADSAOL that is closer to zero when compared to the first value.

19. The system of claim 17, wherein analyzing the data to determine the first value for the ADSAOL includes determining that the first value for the ADSAOL exceeds a threshold value.

20. The system of claim 15, wherein the second lane includes a feeder point that delivers traffic traveling in the second lane.

18. The system 17, wherein the third lane is reconfigured if doing so would result in the second value being substantially zero.