Traffic information service system and method

Patent metadata

Field	Value
Publication number	US-2021012651-A1
Application number	US-201916599926-A
Country	US
Kind code	A1
Filing date	Oct 11, 2019
Priority date	Jul 8, 2019
Publication date	Jan 14, 2021
Grant date	—

Abstract

A system and a method for providing traffic information and includes: a database storing and managing traffic pattern information based on past traffic information; and a server that computes a real-time link entry time based on a real-time link speed received from a probe vehicle, corrects the traffic pattern information based on the real-time link speed and the real-time link entry time, and predicts and provide real-time traffic information based on the corrected traffic pattern information.

First claim

What is claimed is:

1 . A traffic information providing system, the system comprising:
a database configured to store and manage traffic pattern information based on past traffic information; and a server including a memory and a processor configured to execute instructions stored in the memory, the processor configured to:
compute a real-time link entry time based on a real-time link speed received from a probe vehicle;
correct the traffic pattern information based on the real-time link speed and the real-time link entry time; and
predict and provide real-time traffic information based on the corrected traffic pattern information.

2 . The system of claim 1 , wherein the server is configured to:
calculate a past link driving time based on a past link speed in the past traffic information, compute a past link entry time, using the past link driving time, and reprocess the past traffic information based on the past link entry time to generate the traffic pattern information.

3 . The system of claim 2 , wherein the past traffic information is generated based on probe data precollected through the probe vehicle.

4 . The system of claim 1 , wherein the server is configured to calculate a real-time link driving time, using the real-time link speed, and compute the real-time link entry time based on a real-time link exit time and the real-time link driving time.

5 . The system of claim 4 , wherein the server is configured to:
match the real-time link exit time to the traffic pattern information, extract a pattern link speed, and compute a speed difference between the real-time link speed and the pattern link speed.

6 . The system of claim 5 , wherein the server is configured to correct the traffic pattern information by reflecting the real-time link entry time and the speed difference.

7 . The system of claim 6 , wherein the server is configured to match the real-time link entry time to the traffic pattern information, and extract the pattern link speed after a pattern link entry time to reflect the speed difference.

8 . The system of claim 1 , wherein the server is configured to:
select a lane link, of which a link speed in a link set for each lane in a preceding road section is not greater than a first reference speed, determine whether a link speed of a lane link in a following road section connected to the selected lane link is not less than a second reference speed, and determine whether a difference between a lowest link speed and a highest link speed of the lane link in the following road section is not less than a third reference speed within a predetermined time based on a current time, when the link speed of the lane link in the following road section is not less than the second reference speed.

9 . The system of claim 8 , wherein the server is configured to match the current time to the traffic pattern information to reflect a lowest pattern link speed among pattern link speeds within the predetermined time based on the current time, to a link speed of the following road section in advance, when a difference between the lowest link speed and the highest link speed of the lane link in the following road section is not less than the third reference speed.

10 . A traffic information providing method, the method comprising:
generating, by a processor, traffic pattern information based on past traffic information; receiving a real-time link speed from a probe vehicle; computing, by the processor, a real-time link entry time based on the real-time link speed; correcting, by the processor, the traffic pattern information based on the real-time link speed and the real-time link entry time; and predicting and providing, by the processor, real-time traffic information based on the corrected traffic pattern information.

11 . The method of claim 10 , wherein generating the traffic pattern information includes:
calculating, by the processor, a past link driving time, using a past link speed in the past traffic information; calculating, by the processor, a past link entry time by utilizing the past link driving time; and reprocessing, by the processor, the past traffic information based on the past link entry time to generate the traffic pattern information.

12 . The method of claim 10 , wherein computing the real-time link entry time includes:
calculating a real-time link driving time based on the real-time link speed; and estimating the real-time link entry time, using the real-time link driving time and a real-time link exit time.

13 . The method of claim 10 , wherein correcting the traffic pattern information includes:
calculating a speed difference between the real-time link speed and a pattern link speed, based on a real-time link exit time; and correcting the traffic pattern information by reflecting the real-time link entry time and the speed difference.

14 . The method of claim 13 , wherein calculating the speed difference includes:
matching the real-time link exit time to the traffic pattern information to extract the pattern link speed; and calculating the speed difference by subtracting the pattern link speed from the real-time link speed.

15 . The method of claim 13 , wherein correcting the traffic pattern information by reflecting the real-time link entry time and the speed difference includes:
extracting the pattern link speed matched to the real-time link entry time, from the traffic pattern information; calculating a link speed of the real-time link entry time by reflecting the speed difference to the extracted pattern link speed; and generating the real-time traffic information by reflecting the calculated link speed to the real-time link speed.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Park Sung Hwan

Classifications

• G08G1/0129 Primary

  for creating historical data or processing based on historical data · CPC title

• G08G1/096716

  where the received information does not generate an automatic action on the vehicle control · CPC title

• G08G1/01 Primary

  Detecting movement of traffic to be counted or controlled (G08G1/07 - G08G1/14 take precedence) · CPC title

• G08G1/09

  Arrangements for giving variable traffic instructions ({railroad crossing signals B61L; reflectors E01F, G08B}; indicating arrangements for variable information by selection or combination of individual elements G09F9/00) · CPC title

• H04L67/12

  specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks · CPC title