TRAFFIC INTERSECTION DRIVING ASSISTANCE METHOD AND SYSTEM

• US 20180158331A1
• Filed: 05/20/2016
• Published: 06/07/2018
• Est. Priority Date: 05/20/2015
• Status: Active Grant

• Current Assignee: Zhejiang Geely Automobile Research Institute Company Limited (Shu Fu Li), Zhejiang Geely Holding Group Co., Ltd. (Shu Fu Li)
• Original Assignee: Zhejiang Geely Automobile Research Institute Company Limited (Shu Fu Li), Zhejiang Geely Holding Group Co., Ltd. (Shu Fu Li)
• Inventors: LI, Xuefeng, HUO, Ke, LI, Bo, ZHOU, Dayong, LIU, Weiguo, WU, Chengming, FENG, Qingfeng
• Granted Patent: US 10,643,469 B2
• Time in Patent Office: Days
• CPC Class Codes: G08G 1/0116 from roadside infrastructure, e.g. beacons
• CPC Class Codes: G08G 1/012 from other sources than vehicle or roadside beacons, e.g. mobile networks
• 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 1/0967 Systems involving transmission of highway information, e.g. weather, speed limits transmission of navigation instructions to the vehicle G08G1/0968
• CPC Class Codes: G08G 1/096775 where the origin of the information is a central station
• CPC Class Codes: G08G 1/096783 where the origin of the information is a roadside individual element
• CPC Class Codes: G08G 1/0968 Systems involving transmission of navigation instructions to the vehicle

Abstract

The present invention provides a traffic intersection driving assistance method and system, wherein the method comprises: acquiring driving information about vehicles within a current intersection area by way of vehicle interconnection; obtaining vehicle flows in various driving directions according to the driving information; determining whether a difference in between vehicle flows in various driving directions exceeds a pre-set threshold, and if so, changing a driving direction of a variable lane; and sending information about the distribution of driving directions of current lanes to the vehicles within the current intersection area. The object of the present invention is to avoid traffic congestion by adjusting a variable lane in time.

Claims

1. A traffic intersection driving assistance method, characterized in that the method comprises:

acquiring driving information about vehicles within a current intersection area by way of vehicle interconnection;

obtaining vehicle flows in various driving directions according to the driving information;

determining whether a difference between the vehicle flows in various driving directions exceeds a pre-set threshold, and if so, changing a driving direction of a variable lane; and

sending information about the distribution of driving directions of current lanes to the vehicles within the current intersection area.

2. The method according to claim 1, characterized in that the method further comprises:

obtaining a total flow of the current intersection area according to the driving information;

deriving congestion condition information about the current intersection area according to the total flow;

obtaining congestion condition information about a nearby intersection area by communicating with a nearby intersection; and

sending the congestion condition information about the current intersection area and the congestion condition information about the nearby intersection area to the vehicles within the current intersection area.

3. The method according to claim 1, characterized in that the determining whether the difference between the vehicle flows in various driving directions exceeds a pre-set threshold specifically comprises:

calculating a difference between a vehicle flow in a first driving direction and that in a second driving direction; and

determining whether the difference is greater than the pre-set threshold, and if so, keeping the driving direction of the variable lane consistent with a driving direction with a higher vehicle flow.

4. The method according to claim 2, characterized in that the method further comprises:

displaying in the vehicles the information about the distribution of the driving directions of the lanes, the congestion condition information about the current intersection area and the congestion condition information about the nearby intersection area.

5. The method according to claim 4, characterized in that the displaying is performed by means of a centre console screen or by way of image projection.

6. A traffic intersection driving assistance system, characterized in that the system comprises:

an intersection facility interconnection unit, for acquiring driving information about vehicles within a current intersection area by way of vehicle interconnection;

a flow data analysis unit, for obtaining vehicle flows in various driving directions according to the driving information; and

a variable lane driving direction change unit, for determining whether a difference between the vehicle flows in various driving directions exceeds a pre-set threshold, and if so, changing a driving direction of a variable lane;

wherein the intersection facility interconnection unit is further used for sending information about the distribution of driving directions of current lanes to the vehicles within the current intersection area.

7. The system according to claim 6, characterized in that

the flow data analysis unit is further used for obtaining a total flow of the current intersection area according to the driving information, and deriving congestion condition information about the current intersection area according to the total flow;

and

the intersection facility interconnection unit is further used for obtaining congestion condition information about a nearby intersection area by communicating with a nearby intersection, and sending the congestion condition information about the current intersection area and the congestion condition information about the nearby intersection area to the vehicles within the current intersection area.

8. The system according to claim 6, characterized in that the variable lane driving direction change unit is specifically used for

calculating a difference between a vehicle flow in a first driving direction and that in a second driving direction;

and

determining whether the difference is greater than the pre-set threshold, and if so, keeping the driving direction of the variable lane consistent with a driving direction with a higher vehicle flow.

9. The system according to claim 7, characterized in that the system further comprises:

an in-vehicle display unit, for displaying in the vehicles the information about the distribution of the driving directions of the lanes, the congestion condition information about the current intersection area and the congestion condition information about the nearby intersection area.

10. The system according to claim 9, characterized in that the in-vehicle display unit performs the displaying by means of a centre console screen or by way of image projection.