Road network operation evaluation method based on vehicle travel data

Abstract

The invention discloses a road network operation evaluation method based on vehicle travel data. The method comprises the following steps of: (a) acquiring the interval average speed of each road section in a certain time interval; (b) dividing speed thresholds of various traffic operation levels of different levels of roads; (c) obtaining the traffic operation level of each road section in the time interval; (d) multiplying the average lane flow, lane number and road section length of each road section in the statistic interval to obtain the vehicle miles traveled on the road section, and adding the vehicle miles traveled of the road sections of different levels of roads to obtain the total vehicle miles traveled of different levels of roads; (e) respectively counting the road mileage of the different levels of roads under different traffic operation levels and the ratio accounting for the total mileage of the level road; and (f) performing weighted average on the ratio in the step (e), and obtaining a ratio of the road mileage under the traffic operation level to the total road network mileage in the whole road network. According to the method, real-time dynamic operation evaluation can be provided.

Description

technical field [0001] The invention relates to the technical field of evaluation of road network operation status, in particular to a road network operation evaluation method based on vehicle travel data. Background technique [0002] For the fast-growing large cities in China, the development of society and economy has driven the development of basic connectivity networks such as transportation and information communication. The development of the economy has attracted more and more people to gather in the city, the scale and area of ​​the city have continued to expand, the demand and quantity of transportation have increased rapidly, and the structure of the road network has changed to "large-scale", "multi-level" and "multi-mode". "develop. In such a complex traffic environment, traffic congestion will inevitably occur and seriously affect normal traffic travel. The complex development of urban structure will inevitably lead to the complication of traffic congestion. ...

AI Technical Summary

Problems solved by technology

[0008] 2) When the theoretical method of load degree evaluation is used for the overall evaluation of the road network, it does not take into account the differences in the effects of roads with different functions and technical levels on the overall operation level of the road network, nor does it consider the interaction between them to restrict the dynamic correlation

Therefore, only the evaluation value of the load (V / C) of each road (road section) can be given under a set travel O-D demand condition, and the evaluation index of the overall operation level of the road network cannot be given

[0009] 3) The load evaluation method cannot reflect the random fluctuations in the road network operation

[0011] To sum up, the theoretical method of load evaluation cannot truly reflect the real-time dynamic characteristics of the road network operation. Although it can still be used for the static evaluation of the service level of a single road or node, it is not suitable for the overall dynamic evaluation of the road network.

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