Method and device for acquiring traffic congestion state

Abstract

The embodiment of the invention provides a method and device for acquiring a traffic congestion state. The method comprises the steps of extracting a road condition slice where each route is located in a traffic flow map and extracting pixel points with road condition information in the road condition slices; dividing road segment coordinate strings based on the pixel points, acquiring the latitudes and longitudes of start and end points of each road segment coordinate string, converting the latitudes and longitudes of the start and end points into WGS84 coordinates, and converting the WGS84 coordinates into pile number start and end point information of the corresponding routes. By means of the method and device for acquiring the traffic congestion state, the conversion from free slice map information published on the Internet to numerical information of the traffic flow congestion state on a road network is achieved, the whole road network including neighboring provinces can be covered, the investment is low, and the requirement of industrial management for space analysis of the traffic flow congestion state associated with the road segments can be met.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of intelligent transportation, and more specifically, to a method and device for acquiring a traffic congestion state. Background technique [0002] Travel conditions are closely related to people's daily life. The quality of road conditions not only affects people's travel efficiency, but also is the main cause of traffic accidents. Continuous traffic congestion can easily arouse drivers' restlessness, which not only brings continuous Whistle noise pollution can also easily induce rear-end collisions and collisions, causing drivers to lose control of their emotions and lead to escalation of conflicts. According to statistics from relevant departments, nearly 30% of traffic accidents occurred under the condition of vehicle congestion. Therefore, effectively ensuring the safe operation of the road network, mastering the operation of road conditions, and guiding drivers to travel at o...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, in order to obtain traffic flow information, two methods are usually adopted. The first method is to browse the road condition slice map in the navigation map on the Internet, and collect PNG images, GIF images, etc. on the corresponding addresses. In order to see The changing trend of the traffic congestion state generally needs to be played in chronological order; the coordinate system in this method is completely solidified, and due to confidentiality reasons, the coordinate system and projection are usually encrypted, and the obtained traffic flow information It cannot completely match the road network that highway managers care about, and it cannot be stored through numerical values; the second method is to use the method of building traffic survey stations to obtain traffic flow information within the management range, and its disadvantages are huge investment and difficult maintenance , high failure rate, and no way to cover the entire road network, let alone know the congestion status of neighboring provinces and other defects

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