ArcGIS-based road section traffic danger state evaluation method

Abstract

The invention discloses an ArcGIS-based road section traffic danger state evaluation method, and the method comprises the steps: numbering each road section according to the design speed of a road, setting piles one by one, and collecting pile coordinates and pile risk source data; based on ArcGIS software, establishing a road map coordinate model according to the pile coordinates and the pile risk source data, forming a road broken line graph according to all coordinates in the road map coordinate model, and establishing road buffer areas on the two sides of the formed road broken line graph;converting the vector data of the road buffer area into raster data; converting each coordinate point set into risk source raster data; establishing a driving risk model according to the road sectiongrid data and the risk source grid data. The comprehensive effect of various risk sources on the driving danger state is comprehensively considered; the driving risk grade and suitability of the roadsection are evaluated, the result is more comprehensive and reliable, different spatial distribution intensities of various risk sources are considered, spatial distribution of the road section, therisk sources and the output result is expressed based on ArcGIS, the method is simple and easy to operate, and the result is more visual.

Description

technical field [0001] The invention relates to the technical field of road traffic safety, in particular to an ArcGIS-based evaluation method for dangerous state of road section driving. Background technique [0002] With the development of the national economy, my country's infrastructure construction has reached a certain scale, and the road network has begun to take shape. However, when roads bring people fast and efficient travel methods, they are also plagued by high accident rates and high death rates. For road managers and users, vehicle safety issues on high-risk road sections are becoming more and more prominent, but there is still a lack of a relatively systematic and overall-oriented road driving risk assessment method. [0003] Existing research on the assessment of driving risk mainly relies on the traffic accidents or traffic conflicts that have occurred, and then uses regression analysis, time series analysis, system analysis and other methods to qualitatively...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an ArcGIS-based evaluation method for road section dangerous state, to overcome the problem of low evaluation accuracy of existing driving risk, the application can improve the evaluation accuracy of driving risk

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