Intersection Traffic Control Using Video-Based Conflict Optimization
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Solution Overview
Problem
Existing road traffic control systems fail to effectively manage conflicts between motor vehicles, pedestrians, and non-motor vehicles, leading to inefficient traffic flow and congestion due to inadequate data on pedestrian and non-motor vehicle traffic conditions.
Innovation Solution
A road traffic control system that utilizes video traffic information analysis to acquire parameters on motor vehicles, pedestrians, and non-motor vehicles, predicts future traffic conditions, assesses actual conditions, and determines control schemes using optimization algorithms to minimize delays for all traffic types, incorporating signal timing and lane adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS and geomagnetic induction are used to obtain traffic flow data from motor vehicles, then motor vehicle traffic data can be obtained, but pedestrian and non-motor vehicle traffic condition information cannot be effectively obtained, leading to data deviations
Solution Approach 1:
The patent applies video analysis technology to simultaneously detect and analyze multiple types of traffic participants (motor vehicles, pedestrians, and non-motor vehicles) using a single unified detection system, replacing the need for separate detection methods for each traffic type and achieving comprehensive traffic condition monitoring
2Productivity
If signal timing optimization focuses mainly on motor vehicles, then motor vehicle traffic flow can be optimized, but pedestrian passage is not fully considered, leading to incomplete traffic management
Solution Approach 1:
The patent implements differentiated signal timing optimization for different traffic participants by location and type, creating specific optimization strategies for motor vehicle lanes, pedestrian crosswalks, and non-motor vehicle areas within the intersection, allowing each zone to be optimized according to its specific traffic characteristics and needs
3Device complexity
If simple computation methods are used to simulate traffic flows, then computation is simplified, but the conflict between pedestrians and motor vehicles is not specifically solved
Solution Approach 1:
The patent transforms the complex traffic conflict resolution problem into a linear planning optimization problem by defining specific parameters for different traffic participants (flow rates, delay times, signal timing parameters) and establishing objective functions that minimize total delay while satisfying constraint conditions, making the problem computationally tractable while maintaining high reliability
Data Source
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AI summary
A system includes a video traffic information analysis module configured to acquire a traffic condition parameter of a road network from video traffic information; a traffic condition prediction module configured to predict a traffic condition in a future period of time according to the traffic condition parameter to obtain a traffic condition prediction result; an actual traffic condition assessment module configured to assess an actual traffic condition based on the traffic condition parameter and according to a traffic condition evaluation model to obtain an actual traffic condition assessment result; and a traffic control decision module configured to determine a control scheme for a controllable traffic element using an optimization algorithm according to the traffic condition prediction result and the actual traffic condition assessment result. Traffic conflicts between motor vehicles, pedestrians and non-motor vehicles at intersections in a road network are reduced, thus effectively alleviating traffic congestion at the intersections.