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Optimal control technology for unconventional signalized intersections
Unconventional intersections dynamically optimize traffic and efficiently relieve urban congestion.
Type
Control system
Tags
Clean transportation
Bridge and culvert works
Road engineering other disciplines
New ideas to solve congestion at intersections
Failure probability model for unconventional intersections
Applicable industry
Water conservancy, environment and public facilities management
Applications
Smart transportation
Key innovations
The innovation lies in that based on theoretical research, a failure model and dynamic optimization mechanism are constructed, and driving behavior are integrated to solve congestion at unconventional intersections, which has been supported by patents.
Potential economic benefits
This technology optimizes traffic flow, significantly improves capacity and alleviates congestion, thereby reducing vehicle fuel consumption and time costs, improving logistics efficiency and overall efficiency of the transportation system, and reducing economic losses.
Potential climate benefits
This technology optimizes traffic flow, alleviates congestion at unconventional intersections and reduces vehicle idle speeds and frequent starts and stops. This directly reduces fuel consumption, thereby reducing carbon dioxide and other greenhouse gas emissions, and achieving significant carbon emission reduction benefits.
Solution supplier
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Tongji University
Tongji University
Tongji University: The national "double first-class" construction university uses advantageous disciplines such as civil engineering, architecture, transportation, and environment to cultivate innovative talents to serve national construction and sustainable urban development.
Shanghai,China
Solution details

The traffic mode of unconventional intersections is to set pre-signals upstream of the intersection, organize left-turn and straight-through traffic flow to alternately use the approach road to improve traffic capacity. It is a new idea to solve intersection congestion.

Although it has been applied in several cities in our country, most of them have to fail due to lack of solid theoretical and technical support. Based on its existing theoretical research results on unconventional intersections, the team will build a failure probability model for unconventional intersections, and establish mechanisms and optimization methods for deadlock prevention, dynamic activation and dynamic control; in addition,

Based on the study of driving behavior and choice preferences, a dynamic and static traffic language system is designed that comprehensively considers driver adaptability and lane queuing balance. In the early stage of research, this project has published 8 related papers and obtained 1 national invention patent and 1 software copyright. On this basis, through cooperation with excellent enterprises and units, with the purpose of application-oriented, we will continue to deepen the scientific nature of the results on the one hand. and practicality, on the other hand, we will realize the popularization and application of the results, and provide new technical support for research institutions, transportation planning, design and management fields. Provide an effective application system to prevent and alleviate traffic congestion, solve actual traffic problems, and serve the improvement of the quality of the overall transportation system.

Last updated
11:59:07, Nov 04, 2025
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