Traffic Safety Support for Shielded Motorcycle Hazard Alerts
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Solution Overview
Problem
Conventional driving assistance systems fail to provide accurate notifications to drivers when a mobile body is shielded by a nearby vehicle, leading to inadequate traffic safety.
Innovation Solution
A traffic safety support system that includes a recognizer to identify traffic participants and environments, a human-machine interface for driver notifications, and a notification mode specifier that adjusts notification intensity based on the presence and proximity of other mobile bodies, as well as their predicted paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external sensors are used to detect mobile bodies, then detection accuracy is improved, but detection capability deteriorates when mobile bodies are shielded by nearby vehicles
Solution Approach 1:
The patent introduces a communication device as an intermediary to receive information from other mobile bodies about their presence and state. This mediator allows the host vehicle to obtain information about shielded mobile bodies that external sensors cannot detect, thereby resolving the contradiction between detection accuracy and detection capability in shielded scenarios.
Solution Approach 2:
The system combines multiple information sources (external sensors and communication device) to achieve universal detection capability. The external sensors detect visible mobile bodies while the communication device detects shielded mobile bodies, together providing comprehensive detection that overcomes the limitations of either method alone.
2Reliability
If notification intensity is increased to improve driver awareness, then traffic safety is improved, but driver annoyance increases
Solution Approach 1:
The notification controller dynamically adjusts notification intensity based on the risk level and detection confidence. When a shielded mobile body is detected through communication information, the system provides stronger notifications to ensure driver awareness. When risk is low or the situation is clear, notifications are reduced or eliminated, preventing driver annoyance while maintaining safety.
Solution Approach 2:
The system applies different notification intensities to different situations and locations. High-intensity notifications are used only when shielded mobile bodies are detected or when risk levels are high, while low-intensity or no notifications are used in safe conditions. This localized application of notification intensity resolves the contradiction between safety and driver comfort.
Data Source
AI summary
Provided is a traffic safety support system capable of improving traffic safety in a situation in which it is predicted that a mobile body other than a host vehicle is shielded by a nearby vehicle present near the mobile body. A traffic safety support system includes a recognizer, a HMI, a risk notification setting unit, and a risk notification control device. The risk notification setting unit sets a notification mode to a hinting notification mode in a case where a motorcycle acts as an oncoming mobile body, and where a four-wheeled automobile is present near the motorcycle and is approaching a four-wheeled automobile from the front in the traveling direction of the four-wheeled automobile, and sets the notification mode to an analogue notification mode in a case where the motorcycle is present within an analogue notification range.