Roadside Control Apparatus for Decentralized Traffic Signal Analysis
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Solution Overview
Problem
Conventional roadside communication apparatuses are limited in their ability to autonomously process advanced information, such as signal analysis, and are reliant on centralized management, preventing decentralized execution of traffic-actuated controls at intersections.
Innovation Solution
A roadside control apparatus capable of wireless communication with mobile devices, equipped with a receiving unit for positional information, a control unit for analyzing signal and traffic states, and a transmission unit for outputting control information to external equipment, enabling decentralized advanced information processing at intersections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If roadside communication apparatuses are newly installed at intersections to enable decentralized execution of advanced information processing, then autonomy and dispersiveness of signal analysis are improved, but device complexity and functional requirements increase
Solution Approach 1:
The roadside communication apparatus is designed to perform multiple functions: it relays probe information from vehicles, executes signal analysis autonomously, generates traffic control commands, and communicates with both mobile devices and central apparatuses. This multi-functionality enables decentralized operation while managing complexity through integrated design
Solution Approach 2:
The roadside communication apparatus autonomously executes signal analysis and generates control commands without requiring constant central apparatus intervention. The apparatus independently processes received probe information, performs traffic state analysis, and generates appropriate control commands, enabling self-service operation at each intersection
2Device complexity
If advanced information processing is centralized at the traffic control center, then system management is simplified, but response time and adaptability to local traffic conditions deteriorate
Solution Approach 1:
The system divides information processing functions between the central apparatus and roadside communication apparatuses. The central apparatus handles system-level management and coordination, while roadside apparatuses handle local signal analysis and command generation. This segmentation enables parallel processing across multiple intersections, reducing overall system response time while maintaining manageable complexity at each level
Solution Approach 2:
The roadside communication apparatus performs signal analysis and generates control commands locally and autonomously without waiting for central apparatus processing. This preliminary action at the edge enables faster local response to traffic conditions while the central apparatus maintains oversight for system coordination
Data Source
AI summary
The present invention relates to a roadside control apparatus 5 capable of wirelessly communicating with a mobile communication apparatus 42. This roadside control apparatus 5 includes: a receiving unit 51 configured to receive positional information of a mobile body (e.g., vehicle 43) equipped with the mobile communication apparatus 42, from the mobile body; a control unit 63 configured to analyze, on the basis of the received positional information, present states of at least one of signal control and road traffic at an intersection Jk, and generate output information based on a result of the analysis; and transmission units 51 to 53 configured to transmit the generated output information to external equipment.