Method and system for improving calculation accuracy of highway traffic blocking coefficient

Abstract

The invention provides a method and system for improving the calculation accuracy of a highway traffic blocking coefficient. According to the invention, coordinate points are marked at preset positions on an electronic map, at least three sets of highway condition cloud data are acquired, and a radar speed measurement device is further set to acquire a set of real-time highway condition data; the three sets of real-time highway condition cloud data are fused, studied and judged and then compared with the set of real-time highway condition data acquired by the radar speed measurement device so as to acquire highway condition accurate data of each coordinate point; the real-time highway condition data is classified according to dark red, red, yellow and green and marked on the electronic map; and whether the position where a certain serial number coordinate point is located is a congestion source or not can be accurately judged through judging highway conditions of the coordinate point and a downstream adjacent coordinate point thereof, and if the coordinate point is determined to be a congestion source, the blocking coefficient of the congestion source is acquired according to the difference between the highway condition data of the coordinate point and the highway condition data of the downstream adjacent coordinate point. The blocking coefficient can more accurately reflect the highway condition congestion degree of all coordinate points on highways within the whole jurisdiction.

Description

technical field [0001] The invention relates to the field of expressway management, in particular to a method and system for improving the calculation accuracy of expressway obstruction coefficient. Background technique [0002] Ensuring the orderly, safe and smooth flow of expressways is the focus of government departments at all levels. As of the end of 2015, the mileage of expressways in my country has reached 117,000 kilometers, ranking first in the world. From the national level to the management departments of various provinces and cities, they all want to grasp the safety and security of the expressway network in a timely and accurate manner. unimpeded condition. [0003] At present, the busyness of highways in economically developed areas is already saturated, especially highway congestion caused by freeway traffic on holidays has become the norm. There is a lack of quantitative analysis methods for highway congestion at home and abroad. Departments and managers urg...

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