ETC data-based highway service area driving-in traffic flow estimation method

A technology for highways and service areas, applied in the field of intelligent transportation, can solve the problems of inability to directly collect traffic flow in expressway service areas, unusable, and calculation of vehicle traffic in service areas

Active Publication Date: 2021-03-30
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent CN102800198A needs to collect accurate historical traffic flow into the expressway service area for modeling to calculate the vehicle inflow flow in the service area, but now most of the service area entrances are

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  • ETC data-based highway service area driving-in traffic flow estimation method
  • ETC data-based highway service area driving-in traffic flow estimation method
  • ETC data-based highway service area driving-in traffic flow estimation method

Examples

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Embodiment 1

[0157] A kind of ETC data-based expressway service area entering traffic flow estimation method of the present embodiment comprises the following steps:

[0158] 1) Divide the expressway into several driving sections according to the position of the ETC mast;

[0159] 2) Based on the historical ETC data of the expressway, the travel time of each vehicle in the historical data through its various driving sections is obtained respectively;

[0160] 3) Obtain the length of each traveling section according to the ETC position, and calculate the average travel speed of each vehicle in each traveling section in conjunction with the result of step 2);

[0161] 4) According to the result of step 3), calculate the value of the average speed of each vehicle passing through the adjacent road section (i, j) of the service area f compared to the average speed of the road section (a, b) passing through the service area f:

[0162]

[0163] in:

[0164] p f (n) is the ratio of the aver...

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Abstract

The invention discloses an ETC data-based highway service area driving-in traffic flow estimation method. The method comprises the following steps of: judging whether a vehicle enters a service area or not by utilizing a hierarchical clustering algorithm according to a road section where the service area is located and historical driving data of the vehicle, and calculating a shunting coefficientof the vehicle entering the service area; and obtaining the traffic flow entering the service area according to the shunting coefficient and the entering flow of an ETC portal and a toll station whichare located at the upstream of the service area in a certain time window. Under the condition that no traffic detection device is arranged at the entrance of the expressway service area, the historical ETC portal data information is utilized, the entrance flow of the service area is estimated according to the passage information of vehicles at the ETC portal. The method can be suitable for estimating the entrance flow of the expressway service area.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to a method for estimating traffic flow entering a highway service area based on ETC data. Background technique [0002] With the continuous development of the economic level, the number of cars has increased year by year, and the traffic flow of expressways has shown a steady upward trend. The role of the expressway service area is becoming more and more prominent. Real-time and accurate understanding of the flow changes in the expressway service area can help the traffic management department to implement reasonable management and control decisions on the service area. On the one hand, reasonable allocation of service area facilities and personnel can To avoid waste of resources or insufficient resources, on the other hand, it can also provide travelers with a good level of service. [0003] Patent CN102800198A needs to collect accurate historical traffic flow entering t...

Claims

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Application Information

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IPC IPC(8): G08G1/065G07B15/02
CPCG08G1/065G07B15/02Y02T10/40
Inventor 孙棣华赵敏魏铨
Owner CHONGQING UNIV
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