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A road network travel time reliability evaluation method based on network car rental data

A technology of travel time and evaluation method, which is applied to traffic control systems, instruments, and traffic flow detection of road vehicles. Effect

Active Publication Date: 2018-11-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above evaluation methods require a large amount of data as support, and many methods involve the data of OD pairs, which are difficult to apply in practice

Method used

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  • A road network travel time reliability evaluation method based on network car rental data
  • A road network travel time reliability evaluation method based on network car rental data
  • A road network travel time reliability evaluation method based on network car rental data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Utilize the reliability index calculation method proposed by the present invention to sample the taxi order data in Hangzhou on the big data platform, and evaluate the traffic reliability, the steps are as follows:

[0035] (1) Obtain a single passenger's origin-destination (OD) coordinates, travel distance between origin and destination, and boarding and alighting time through the online car rental data platform, and calculate the passenger's travel time based on the time difference between boarding and alighting.

[0036] (2) Calculate the travel time rate of each trip on a single OD pair, namely where: τ ijk is the travel time rate of the k-th trip from the i-th traffic area to the j-th traffic area; t ijk is the travel time of the k-th trip from the i-th traffic area to the j-th traffic area; d ijk is the travel distance of the k-th trip from the i-th traffic area to the j-th traffic area.

[0037] (3) Obtain the median travel time rate τ on a single OD pair bas...

Embodiment 2

[0045]Randomly select 100 samples from the OD pair samples, and calculate the BTRI values ​​of each OD pair according to steps 1-3 of Example 1, and divide the BTRI values ​​into five grades according to the table below.

[0046]

[0047] The division results are shown in Table 1-Table 5:

[0048] Table 1-Level1

[0049]

[0050] Table 2-Level2

[0051]

[0052]

[0053] Table 3-Level3

[0054]

[0055]

[0056] Table 4-Level4

[0057]

[0058] Table 5-Level5

[0059]

[0060]

[0061] In the same way, the samples of the five grades are displayed on the map of Hangzhou, as follows Figure 4-8 shown.

[0062] First extract the 404 OD pairs with the largest number of trips in Level5 for analysis, and test the actual travel time by running the actual vehicle. It is found that the actual travel time of the vehicle varies a lot during different time periods of the day, with a standard deviation of 45.90. These segments can be shown to have extremely...

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Abstract

The invention relates to a road network travel time reliability evaluation method based on online booked car data. A division method of road network travel time reliability includes the steps that travel time is calculated according to car taking information of a passenger; the travel time rate of each OD pair on each time of travel is calculated; a network buffer travel time rate index, namely, NBRTI for reflecting road network travel time reliability is further calculated. The more effective method for managing and controlling the running state of a road network is provided for a manager, residents can be helped to better plan the travel time, and necessary information reference is provided for travel of travelers.

Description

technical field [0001] The invention relates to the field of reliability index evaluation of road network travel time, in particular to a reliability index calculation method based on network car rental data. Background technique [0002] During the operation of the urban road traffic system, it is often disturbed by random factors, such as frequent traffic accidents, temporary road maintenance and traffic control, sudden natural disasters (earthquakes, floods, bad weather), etc. The latter brings uncertainty, greatly reduces the reliability of the transportation system operation, and has a negative impact on the performance of urban functions and urban development. Therefore, a smooth and reliable road traffic system is not only the basis for travelers to achieve their travel goals, but also the goal pursued by urban traffic managers. In this case, it is of great practical value to study the evaluation method of multi-level travel time reliability index of road section, ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01
CPCG08G1/0125
Inventor 陈喜群张帅超陈笑微郑宏煜陈楚翘胡浩强刘教坤崔尔佳
Owner ZHEJIANG UNIV