Abstract
The proposal to build the “Yangtze River Golden Waterway” strategy has enabled the shipbuilding volume of the Yangtze River trunk to grow rapidly. With the increase of ship traffic flow, the Yangtze River water traffic safety is facing severe challenges. This paper draws on the road traffic black spots and existing research methods of water traffic accidents and the definition of water traffic black spots. The DBSCAN algorithm and the accident-level weighted average method are used to establish the blackpoint identification model for waterborne traffic. The model is applied to the Yangtze River mid-stream Wuhan Port 2013-2017 water traffic safety accident as an example. Ten black spots and corresponding boundaries are identified. The black point analysis method used in this paper can effectively quantitatively analyze the spatial distribution and characteristics of water traffic black spots, which can provide a new theoretical basis for ensuring the safety of water traffic.
Highlights
Definition of water traffic black spotsThe black spot of a traffic accident is the result of the cumulative distribution of traffic accidents within a certain period of time
This paper fully considers the spatial distribution of water traffic accidents and the severity of accidents
The basic concept of the DBSCAN algorithm[3] is as follows: 1) Density: The density at any point in the space is the number of points contained in the area where the point is the center of the circle and the radius is EPS 2) Neighborhood: The neighborhood of any point in the space is a set of points contained in the area where the point is the center of the circle and the radius of EPS is recorded as Neps(p)={q ∈ D|dist(p,q) ≤ EPS} Here D is the database
Summary
The black spot of a traffic accident is the result of the cumulative distribution of traffic accidents within a certain period of time. According to the spatial distribution characteristics of water traffic accidents, the characteristics of accident levels and the definition of road traffic black spots [11,12], water traffic black spots can be defined as: The number or characteristic concentration of water traffic accidents in a certain period of time and specific waters In this case, the water area has an accident level higher than a certain limit. This paper fully considers the spatial distribution of water traffic accidents and the severity of accidents
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