Urban road free flow state percentile vehicle speed determination method based on floating vehicle data

Abstract

The invention provides an urban road free flow state percentile vehicle speed determination method based on floating vehicle data. The method comprises the following steps of: S1, preprocessing urban road network data; S2, acquiring the floating vehicle data, and performing map matching through floating vehicle geographical location information and the preprocessed urban road network data; S3, respectively calculating percentile velocities of a peak period and an off-peak period of each day; and S4, calculating a free flow percentile velocity according to the percentile velocities of the two time periods every day. According to the urban road free flow state percentile vehicle speed determination method, the road congestion vehicle speed data in the floating vehicle data can be effectively eliminated, the percentile vehicle speed data of the free flow in the road is obtained, and the floating vehicle data is used for road function positioning and speed limit standard formulation.

Description

technical field [0001] The invention relates to the technical field of urban road traffic safety, and more specifically, to a method for determining the percentile vehicle speed in the free flow state of urban roads based on floating vehicle data. Background technique [0002] With the rapid development of the economy, the number of urban roads continues to increase, and the number of motor vehicles continues to increase. In order to ensure safe and smooth travel, the country continues to introduce normative standards to manage new roads, and some road safety management that has been built often does not meet the latest standards. Specific issues such as functional positioning and maximum speed limit standards are controversial. [0003] The free-flow percentile speed of vehicles on the road can reflect the functional orientation and traffic efficiency of the road, and can usually be used as the maximum speed limit standard. In practice, many countries use 85% or 90% of the ...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of time and space limitations and incomplete coverage in the methods of manual collection and statistics in the prior art and radar interval speed measurement, the present invention provides a free flow state percentile vehicle speed of urban roads based on floating vehicle data The determination method can effectively eliminate the road congestion speed data in the floating car data, and obtain the percentile speed data of the free flow in the road, so that the floating car data can be used for road function positioning and speed limit standard formulation

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