Traffic Light Driver Assistance with Careless-State Alert Suppression
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Solution Overview
Problem
Drivers may feel annoyed when alerted for a right turn despite a traffic light being in a passage prohibited state, especially if they are not in a careless driving state.
Innovation Solution
A driving assistance apparatus that determines a driver's intentions and state of alertness to suppress alerts when they are not in a careless driving state, even if the traffic light is in a passage prohibited state, using sensors and cameras to assess acceleration, deceleration, steering, and wakefulness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If driving assistance alerts are issued when the traffic light is in a passage prohibited state, then the safety and compliance of the driving assistance system is improved, but the driver experience deteriorates due to annoyance from unnecessary alerts
Solution Approach 1:
The system dynamically adjusts the driving assistance alert behavior based on the detected driver state. When the driver is determined to be in a non-careless state (attentive, following traffic rules), the alert is suppressed. When the driver is in a careless state (distracted, ignoring traffic signals), the alert is issued. This dynamic adaptation resolves the contradiction by making the system's safety function conditional on the driver's actual behavior state.
Solution Approach 2:
The system changes the operational parameter of alert issuance based on the driver state parameter. By detecting parameters such as eye movement, head position, and driving operations, the system determines whether to activate or suppress the alert function. This parameter-based control allows the system to maintain safety when needed while avoiding unnecessary alerts that would annoy attentive drivers.
2Ease of operation
If the system suppresses driving assistance alerts when the driver is not in a careless driving state, then the driver experience is improved by reducing annoyance, but the safety monitoring function deteriorates by potentially missing harmful situations
Solution Approach 1:
The system continuously monitors driver state through multiple sensors (camera, operation detection unit) and uses this feedback to dynamically control alert issuance. The feedback loop ensures that the system only suppresses alerts when it is confident the driver is attentive and following traffic rules, while maintaining alert functionality when careless driving is detected, thus preserving safety monitoring while improving driver experience.
Solution Approach 2:
The driver state determination unit acts as an intermediary between the traffic light state detection and the alert issuance. This intermediary layer analyzes driver behavior and mediates whether the alert should be transmitted to the driver, ensuring that safety alerts are only suppressed when the driver is genuinely attentive, thereby maintaining safety monitoring effectiveness while reducing unnecessary alerts.
3Measurement precision
If the system uses multiple detection methods (acceleration, deceleration, steering, turn intention) to determine driver state, then the accuracy of driver state determination is improved, but the system complexity increases
Solution Approach 1:
The system uses a single driver state determination unit that performs multiple detection functions (acceleration intention, deceleration intention, steering intention, turn intention) through integrated analysis of driver operations. This multi-functional approach improves measurement precision by considering multiple driving parameters simultaneously while avoiding the complexity of separate detection systems for each parameter, as all functions are unified in one determination unit.
Data Source
AI summary
A driving assistance apparatus configured to provide driving assistance regarding a traffic light to a driver of a host vehicle when the traffic light in front of the host vehicle is in a passage prohibited state, wherein the driving assistance apparatus determines whether the driver is in a careless driving state, and suppresses driving assistance regarding the traffic light when the driver is determined to be in the careless driving state even when the traffic light in front of the host vehicle is in the passage prohibited state.