Dynamic data-based public traffic vehicle intersection running bottleneck distinguishing method

Abstract

The invention provides a dynamic data-based public traffic vehicle intersection running bottleneck distinguishing method. The method comprises the steps of: S1, performing data pre-processing; S2, acquiring longitude and latitude data of an intersection range and screening out a public traffic vehicle running database in the intersection range from a public traffic vehicle GPS database; S3, estimating the actual running time at each intersection of public traffic vehicles by using a speed-time integral model and further calculating the intersection delay of each public traffic vehicle; S4, calculating the public traffic vehicle delay time average value of each intersection of a statistical interval; S5, judging the type of the intersections according to the levels of intersecting roads; S6, performing classified statistics on cumulative frequency distribution conditions of the average delay of the intersections of all types, determining a bottleneck degree distinguishing threshold anddynamically identifying the running bottleneck of the intersections of all types. The method can improve the running efficiency of public traffic vehicles at intersections and is great in universality.

Description

Technical field: [0001] The invention relates to a dynamic data-based method for judging bottlenecks in the operation of bus intersections, and belongs to the fields of smart bus technology, bus big data, and urban bus operation management. Background technique: [0002] Intersections are an important part of roads, and they are high-incidence locations for urban traffic delays. The flexibility of bus vehicles is poor. Due to the influence of social vehicles, unreasonable signal configuration, unscientific lane division, and lack of protection of bus rights of way at intersections, the delays of public vehicles are often greater than that of social vehicles, resulting in public transport. The waiting time at the entrance is too long, which affects the overall operating efficiency of public transport vehicles. Therefore, it is necessary to face the public transport system and study the intersection bottlenecks encountered by public transport vehicles during operation. Due t...

AI Technical Summary

Problems solved by technology

Due to the influence of dynamic traffic flow, the bottleneck has the characteristics of time and space dynamics. At present, most of the bottlenecks are studied based on the influence of static facilities at intersections. Traditional manual survey methods are often used for the collection of intersection data. The analysis reveals a relatively large limitation. It cannot make a dynamic judgment on the time, space, and degree of intersection bottlenecks, which is not conducive to the real-time and scientific nature of public transportation management and decision-making.

Images