Road condition information generating method based on bus global position system (GPS) tracking data

Abstract

The invention discloses a road condition information generating method based on bus global position system (GPS) tracking data. The method includes that (1) in a bus road network data structure, actual bus stations, station points, route intersection points and intersection nodes are expressed by nodes, each two adjacent nodes that are on the same road and in the same direction are connected through a line section, the line section is defined as a road section for representing a single-direction actual road section, and a driving direction of the road section is used as an associate attribute of the road section; (2) all GPS tracking data of n buses within certain time period T are obtained; (3) all GPS tracking data of the n buses are matched to the bus road network data structure; (4) average speed (img file='DDA0000591646390000011.TIF'wi='42' he='59') of h buses that are matched with the corresponding road section is used as road condition information of the actual road section. According to the road condition information generating method based on the bus GPS tracking data, the whole bus road network data structure is established through point elements and line elements, and road conditions of the road section can be accurately reflected.

Description

technical field [0001] The invention relates to the traffic field, in particular to a method for generating road condition information based on bus GPS track data. Background technique [0002] In recent years, with the acceleration of urbanization and the increase of urban population, the number of motor vehicles and the number of residents traveling have increased significantly, the relationship between transportation supply and demand has gradually become unbalanced, and road congestion has become increasingly prominent. The development of intelligent transportation systems has long been a problem for countries around the world to deal with urban traffic problems. the main way. Among them, the research and application of intelligent public transportation system embodies the development concept of public transportation priority and green travel, and undertakes the important responsibility of improving the intelligent operation and dispatching ability of public transportati...

AI Technical Summary

Problems solved by technology

[0004] Ordinary road networks do not have a high degree of adaptability in bus system operation scheduling and road condition information processing. The bus lines are separated according to their respective stations, and multiple lines are stacked together, so the ambiguity at the edge of the overlapping road section introduces a large error in the process of calculating the road condition of the road section

like figure 1 As shown in the figure, if the end station is known as the route b of B, then the traffic conditions in the interval mB will be generated from the floating car data belonging to b, and its scope is only in mB. Calculating the road conditions of mn as mB road conditions in general will result in information accuracy a substantial reduction in

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