System for forecasting traffic flow of urban ring-shaped roads

Abstract

The invention discloses a system for forecasting traffic flow of urban ring-shaped roads, relating the related technical fields of database management, data analysis and processing and data speculation. The system comprises a traffic flow data management system, a traffic flow data characteristic analysis system and a traffic flow data speculation system. The traffic flow data management system is used for maintaining the traffic flow database, realizing reading of real-time traffic flow data and input of predicted data; the traffic flow data characteristic analysis system is used for realizing characteristic analysis of traffic flow data and pre-processing traffic flow data; the traffic flow data speculation system is used for selecting traffic flow prediction models and analyzing predicting outcomes, realizing prediction method comparison and display and saving of the predicting outcomes. The system can solve the quality problem of traffic flow data and deviated prediction in the traditional traffic flow prediction, introduces various influencing factors of upper sections and lower sections of roads for predicting road traffic flow and realize real-time and accurate traffic flow prediction of the road network.

Description

technical field [0001] The invention relates to traffic flow prediction technology, in particular, it provides a traffic flow prediction system for urban ring roads. Background technique [0002] The prediction of traffic flow characteristics, especially short-term road traffic flow prediction, is the basis of traffic management methods such as urban road traffic control and guidance. Accurate and real-time short-term traffic flow prediction is the premise of realizing traffic control and management and traffic guidance, and is the key to transform the intelligent transportation system from "passive response" to "active action". Therefore, the short-term traffic flow forecasting system is one of the important basic subsystems in the intelligent transportation system. Traffic information service and traffic management based on predictive information belong to the frontier field of intelligent transportation system research in the world. Some developed countries and regions h...

AI Technical Summary

Problems solved by technology

However, the massive traffic flow data obtained often contain erroneous data and missing data, so the use of traffic flow data that is not identified and repaired has the problem of reducing the reliability (accuracy) of model prediction.

[0006] The second is the defect of the traffic flow forecasting model

Therefore, in the actual traffic flow prediction, there will be a problem of bias prediction

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