Direction sign laying method oriented to interest points

Abstract

The invention relates to a direction sign laying method oriented to interest points. The method includes the steps of extracting an indicating road network of the interest points on a road network model; defining path optimization indexes for measuring path guiding convenience, wherein the path optimization indexes include the path length, the traffic flow and the intersection steering; conducting traversal on the indicating road network in the breadth-first order, calculating and dynamically renewing the path optimization indexes, and obtaining the optimal guide path in the indicating road network; determining the content of set guide information and the positions of set guiding signs according to the optimal guide path. According to the direction sign laying method oriented to the interest points, influences of the path length and the traffic flow on the journey time and prolonging of the journey time caused by passing through the intersection are considered; the path index is optimized through combination with a breadth optimization search method; a direction sign laying scheme which is high in economic efficiency, fast and convenient to use can be obtained; by means of the laying scheme, the requirement for indicting the interest points in a short-distance and detailed mode can be met, and the requirement for conducting key guidance on a remote backbone road network can be met as well.

Description

technical field [0001] The invention relates to the field of road traffic planning and design, and more specifically, to a point-of-interest-oriented road sign layout method. Background technique [0002] In recent years, my country's social economy has developed rapidly, and urban infrastructure has entered a period of vigorous development. Especially as a pioneer of economic development, urban road traffic construction has entered a peak period, and a large number of roads, new development areas, and commercial centers have been put into use. As the most important road traffic facilities for static path guidance and traffic diversion, urban road guide signs also urgently need to be updated and upgraded. How to enable road users to reach their destinations quickly and conveniently on the new traffic road network and realize the diversion of traffic flow is an important topic that road managers need to study. The main factors affecting travel time are: path length, path tra...

AI Technical Summary

Problems solved by technology

This method is suitable for the setting of guide signs at intersections, but it cannot connect the guide signs of adjacent intersections in series to form regional guidance, and the continuous accessibility of guide objects is difficult to guarantee

The point-of-interest-oriented road sign layout method takes the point of interest as the guiding object, and starts from a specific entrance and exit to plan a convenient and fast path for laying out the road signs. This method conforms to the path of the road signs to a certain extent Induced function, and ensure the continuous accessibility of the guidance object, but this method is only suitable for point-to-point path guidance, it is difficult to meet the regional guidance

[0006] The above-mentioned layout method is mainly for the guidance sign layout method of a single guidance path for a single intersection or a single point of interest. The screening of guidance information can consider the characteristics of road attributes and points of interest, but the guidance path only considers the length of the guidance path, and does not consider The impact of traffic flow and intersection turning on travel time, and cannot meet the demand for point-of-interest-oriented signposting in designated areas

Images