Road accident dark spot identification system based on system safety index distribution method

Abstract

The invention discloses a road accident dark spot identification system based on a system safety index distribution method. The system comprises a history accident data recording unit, a system safety index recording unit, a dark spot identification unit and a dark spot identification result output unit. The system safety index method comprehensively takes consideration of history accident data correlative in space positions on a target road, calculation is simple, only system safety indexes on a road segment node need to be calculated, road segment units are needless to be divided, the occasion that in a traditional dark spot identification method, the road segment units must be divided first is eliminated, meanwhile the space correlation of the history accident data is taken into consideration, and results are precise.

Description

technical field [0001] The invention belongs to the field of road safety, and particularly relates to a method for identifying black spots of road accidents by analyzing the spatial distribution of historical traffic accident data to obtain the distribution of system safety indicators on the road, and for identifying black spots of accidents on the road using historical road data . Background technique [0002] At present, road traffic accidents are increasing day by day, and road safety issues are getting more and more attention. In the road traffic safety guarantee project, the first thing to be carried out is the identification of road accident black spots, which is also the most important step. The identification of road accident black spots includes three technical points: division of road sections, design of identification methods, and selection of identification indicators. Finally, identification of road accident black spots is completed. Among them, the selection ...

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Problems solved by technology

These methods have their own advantages, but they are all based on road section units in use. Therefore, due to the complex and changeable road traffic conditions, the process of dividing road section units has a certain degree of subjective arbitrariness and lack of persuasiveness, which affects the accuracy of the final identification results. sex

[0004] In the past, identification of road accident black spots was based on subjective judgment first, and then the division of road section units was completed, and then the corresponding black spot identification method was implemented. It has a greater impact on the reliability of the identification results in the later stage, which is not conducive to popularization and use

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