Traffic jam determining method based on traffic jam space-time total amount

Abstract

The invention discloses a traffic jam determining method based on traffic jam space-time total amount. The method comprises the steps of firstly, dividing a road into a plurality of road sections according to the road levels and the practical requirements and calculating the travel speed, flow, a travel time specific value and the saturation level; secondly, establishing the road section traffic circulation state identification standard according to the travel time specific value and the saturation level, and utilizing the standard to determine the traffic circulation state of each road section; then calculating the comprehensive weight of each level of road, and carrying out weighing accumulation on the road sections in the traffic jam state in the unit time of the statistic range to obtain the jam space-time total amount in the unit time of the statistic range; finally, accumulating the jam space-time total amount in the unit time to obtain the traffic jam space-time total amount in the statistic time period. According to the traffic jam determining method based on the traffic jam space-time total amount, data analysis is carried out based on massive continuous observation data, long-term monitoring of the city traffic circulation state is achieved, the traffic jam space-time total amount is put forwards, and the traffic jam state is determined from the microcosmic, mesoscopic and macroscopic perspectives at the same time.

Description

technical field [0001] The invention belongs to the technical field of traffic congestion quantitative analysis and measurement, and specifically relates to a method for comprehensively, quantitatively and scientifically measuring traffic congestion by using the time and space characteristics of urban traffic travel. Background technique [0002] With the continuous improvement of urbanization and motorization, traffic congestion has become a thorny problem commonly faced by major cities in the world. Urban traffic is a dynamic, open, and comprehensive huge system with complex supply and demand relationships, and the generation, evolution, and dissipation of traffic congestion is a complex process. Comprehensive and objective measurement of traffic congestion level and real-time and accurate grasp of traffic congestion situation are important foundations and prerequisites for in-depth analysis and research on traffic congestion control. [0003] Traditional urban traffic co...

AI Technical Summary

Problems solved by technology

[0004] 1) There is no scientific basis for artificially setting the congestion threshold and manually judging the degree of congestion;

[0005] 2) It mainly focuses on the measurement of microcosmic and local congestion, and lacks the monitoring and evaluation of the overall traffic congestion degree;

[0006] 3) It mainly focuses on the instant release of congested road sections, and less involves long-term urban traffic operation status monitoring;

[0007] 4) It is impossible to use one indicator to simultaneously measure traffic congestion from the micro, meso and macro perspectives

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