Dynamic Traffic Signal Control for Pedestrian Detection
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Solution Overview
Problem
Current traffic management systems struggle to efficiently manage traffic flow at intersections, particularly for non-motorized vehicles and pedestrians, due to limitations in vehicle detection and communication with traffic control systems.
Innovation Solution
A system that enables individual travelers, including pedestrians and users of smaller conveyances, to communicate their location and direction of travel to signal light controllers, allowing for dynamic adjustment of traffic signals to prioritize different types of vehicles and travelers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional vehicle detection systems are used at intersections, then motor vehicle traffic can be detected and controlled, but non-motorized vehicles and pedestrians cannot be effectively detected or accommodated
Solution Approach 1:
The system uses mobile communication devices that serve multiple functions: they act as detection devices for the traffic management system, provide location and direction information, and deliver feedback to travelers. This universal device resolves the contradiction by enabling detection of all traveler types (motorized and non-motorized) through a single platform that the travelers already possess.
Solution Approach 2:
The mobile communication device acts as an intermediary between the traveler and the traffic management system. It captures traveler information (location, direction) and transmits it to the system, which then processes this data to control signal lights. This intermediary resolves the detection gap for non-motorized travelers by using their own devices as the detection medium.
2Productivity
If signal lights are controlled based on traditional detection methods, then motor vehicle flow can be managed, but traffic flow efficiency for all travelers is reduced
Solution Approach 1:
The system implements a closed-loop feedback mechanism where mobile communication devices transmit traveler location and direction data to the traffic management system, which then adjusts signal light timing in real-time based on this feedback. This enables dynamic optimization of traffic flow for all traveler types, reducing overall wait time and improving productivity by accommodating actual travel demand rather than following fixed patterns.
Solution Approach 2:
The signal light control transitions from static, pre-programmed timing to dynamic, real-time adjustment based on actual traveler conditions. The system continuously receives location and direction data from mobile devices and adapts signal timing accordingly, allowing the traffic management system to respond to changing conditions and optimize flow efficiency for diverse traveler types.
3Adaptability or versatility
If mobile communication devices are used for traveler detection, then all types of travelers can be detected and accommodated, but system complexity increases
Solution Approach 1:
The system leverages the mobile communication devices that travelers already possess and use for other purposes. These devices self-identify travelers and provide detection data without requiring separate detection infrastructure. The traveler's own device serves the dual purpose of communication and traffic detection, reducing overall system complexity while expanding traveler coverage.
Solution Approach 2:
The mobile communication device performs multiple functions: it serves as the traveler's communication tool, location tracker, and detection device for the traffic management system. This multi-functionality eliminates the need for separate detection infrastructure for different traveler types, thereby reducing system complexity while achieving universal traveler coverage.
Data Source
AI summary
A system and method that enables individual travelers, including pedestrians or individuals on smaller conveyances, to communicate their location and direction of travel to signal light controllers at an intersection, enables traffic networks to receive this communication and output the detected data to the corresponding intersection traffic-signal controller to allow for individuals not in standard motor vehicles to be detected by traffic detection systems and to allow for priority of traveler flow either independent of vehicle use, or based on specifics of the vehicle used. The system also provides feedback to the traveler to provide information about the actions of the system or to alter the movement of the traveler.