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System and apparatus for road traffic congestion degree estimation

A technology of road traffic and traffic congestion, which is applied to the traffic control system of road vehicles, traffic control systems, instruments, etc., and can solve problems such as road traffic jams that are not described

Inactive Publication Date: 2008-12-17
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned patent documents describe that the place names included in the license plate information are considered as destinations, but do not describe how to predict road traffic jams

Method used

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  • System and apparatus for road traffic congestion degree estimation
  • System and apparatus for road traffic congestion degree estimation
  • System and apparatus for road traffic congestion degree estimation

Examples

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no. 1 example

[0058] Embodiments of the present invention are described below. figure 1 Roughly shown is a tourist attraction 1 and its surroundings as a first area in which the road traffic congestion degree estimation system according to this embodiment is installed. The ordinary road 2 as the first road extending outward from the tourist attraction 1 allows people to come to the tourist attraction 1 from the outside or to go outside from the tourist attraction 1 . Vehicles can travel between the tourist attraction 1 and the outside only when they pass through the ordinary road 2 . In addition, the ordinary road 2 leads to an expressway 3 as a second road. The expressway 3 extends from the tourist attraction 1 and the surrounding area close to the tourist attraction 1 as a second area (for example, an area within the jurisdiction to which the tourist attraction 1 belongs) to the outside of the nearby area. Therefore, people use the expressway 3 to travel from the tourist attraction 1 to t...

no. 2 example

[0123] Next, a second embodiment of the present invention is described below. Figure 16 It is a side view of part of the general road 2 used in this embodiment. The difference between this embodiment and the first embodiment is that the road traffic congestion estimation system according to this embodiment includes a dedicated short-range communication (DSRC) road machine 50 instead of the smart license plate reader 5 . The DSRC road machine 50 acquires information on a scheduled travel route on which the vehicle travels or information on a heading direction in which the vehicle is traveling from the car navigation system 11 installed in the vehicle. Hereinafter, the information on the scheduled driving route and the information on the heading direction are collectively referred to as navigation information. The distance between the smart license plate reader 4 and the DSRC road machine 50 is short (eg 10m or less).

[0124] Differences between this embodiment and the first...

no. 3 example

[0138] Next, a third embodiment of the present invention will be described below. Figure 19 is a side view of a part of the general road 2 used in this embodiment. The difference between the present embodiment and the second embodiment is that the road traffic congestion estimation system according to the present embodiment includes a hybrid road machine 13 which has the capabilities of a server 7, an intelligent license plate reader 4 and a DSRC road machine 50 And replace the server 7, the intelligent license plate reader 4 and the DSRC road machine 50 (equivalent to the road traffic congestion estimation system and the road traffic congestion estimation equipment).

[0139] Figure 20 The hardware configuration of the hybrid road machine 13 is shown. The hybrid road machine 13 includes a memory 71 , a control unit 73 , a wireless unit 74 , an antenna 75 , a DSRC wireless unit 76 and an antenna 77 .

[0140] The memory 71 and the control unit 73 are the same hardware dev...

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Abstract

A system for estimating the degree of road traffic congestion including a smart license plate reader that detects vehicles traveling on ordinary roads leading from the outside to tourist attractions. Based on the number of vehicles approaching the tourist attraction, the number of vehicles leaving the tourist attraction and the smart license plate information of the detected vehicles, the number of local vehicles and foreign vehicles currently existing in the tourist attraction is calculated. In addition, based on the above-calculated numbers of local vehicles and foreign vehicles, the expected traffic congestion on the expressway that brings foreign vehicles departing from tourist attractions into the area where the foreign vehicles are based via ordinary roads is estimated. In this estimate, the number of foreign vehicles plays a larger role in the increase in traffic congestion than the number of local vehicles.

Description

field of invention [0001] The invention relates to a road traffic congestion degree estimation system and a road traffic congestion degree estimation device. Background of the invention [0002] Currently, road information traffic jam provisioning systems based on Vehicle Information and Communication System (VICS) are known, which employ FM multiplexing or beacon technology. [0003] Patent Document 1 discloses a technology for predicting road traffic jams by acquiring license plate (or license plate) information by performing radio communication with each vehicle via road machines, and detecting the location of the vehicle based on place name information included in the license plate information. possible destinations to predict road traffic jams. [0004] Patent Document 1: JP-2003-109169A [0005] The above-mentioned patent document describes that the place name included in the license plate information is considered as a destination, but does not describe how to predi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/00G08G1/065
CPCG08G1/0104G08G1/017
Inventor 林和美
Owner DENSO CORP
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