Traffic volume determination system, traffic volume determination method, and non-transitory computer-readable storage medium storing traffic volume determination program

• US 10,535,258 B2
• Filed: 03/21/2019
• Issued: 01/14/2020
• Est. Priority Date: 09/15/2017
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Jin, Xin, Takayama, Toshinori
• Primary Examiner(s): Lieu, Julie B
• Application Number:
  US16/360,709
• Publication Number:
  US 20190221112A1
• Time in Patent Office: 299 Days
• Field of Search: None
• CPC Class Codes: G08G 1/0112 from the vehicle, e.g. floating car data [FCD]
• 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 1/0141 for traffic information dissemination
• CPC Class Codes: G08G 1/065 by counting the vehicles in a section of the road or in a parking area, i.e. comparing incoming count with outgoing count

Abstract

A traffic volume determination system includes a processor configured to: calculate, while taking account of a change between a past traffic volume and a current traffic volume of vehicles passing through an area around a link, an estimated value of the current traffic volume of the vehicles passing through the link from the past traffic volume of the vehicles passing through the link; and determine that the link is closed when a current actual traffic volume of the vehicles passing through the link is smaller than the estimated value of the current traffic volume of the vehicles passing through the link by more than a statistical error.

Claims

1. A traffic information system comprising a processor configured to:

determine that a link is closed when a current traffic volume of the vehicles passing through the link is smaller than an estimated value of the current traffic volume of the vehicles passing through the link by more than a statistical error defined in statistical information wherein

the statistical information is generated from the estimated value of the current traffic volume of the vehicles passing through the link and the past traffic volume of the vehicles passing through the link.

2. The traffic information system according to claim 1, wherein

the processor is configured to estimate the current traffic volume of the vehicles passing through the link from the past traffic volume of the vehicles.

3. The traffic information system according to claim 1, wherein the processor is configured to multiply a ratio of the current traffic volume of the vehicles passing through the area to the past traffic volume of the vehicles passing through the area by the past traffic volume of the vehicles passing through the link to calculate the estimated value of the current traffic volume of the vehicles passing through the link.

4. A traffic information determination method comprising:

determining that a link is closed when a current traffic volume of the vehicles passing through the link is smaller than an estimated value of the current traffic volume of the vehicles passing through the link by more than a statistical error defined in statistical information, by a processor, wherein

the statistical information is generated from the estimated value of the current traffic volume of the vehicles passing through the link and the past traffic volume of the vehicles passing through the link.

5. The traffic information determination method according to claim 4, further comprising

estimating the current traffic volume of the vehicles passing through the link from the past traffic volume of the vehicles, by the processor.

6. The traffic information determination method according to claim 4, further comprising

multiplying a ratio of the current traffic volume of the vehicles passing through the area to the past traffic volume of the vehicles passing through the area by the past traffic volume of the vehicles passing through the link to calculate the estimated value of the current traffic volume of the vehicles passing through the link, by the processor.