Driving Assist Notification Priority for Concurrent Risk Alerts
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Solution Overview
Problem
When both deceleration assist control and risk avoidance control operate concurrently in a driving assist system, drivers experience annoyance and uneasiness due to information overload from simultaneous notifications of deceleration targets and risk factors, with risk factors being more critical but not always prioritized in notifications.
Innovation Solution
The driving assist system prioritizes notifications by informing the driver of the risk factor during concurrent operation of deceleration assist control and risk avoidance control, and adjusts notifications based on the urgency of the deceleration assist control, ensuring the risk factor is always notified and only notifying the deceleration target when the urgency threshold is met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If both deceleration assist control and risk avoidance control operate concurrently with simultaneous notifications, then complete information is provided to the driver, but driver annoyance increases due to information overload
Solution Approach 1:
The notification system is segmented into priority levels, with risk factors and deceleration targets notified separately based on their urgency and importance. This segmentation allows the system to provide complete information while avoiding information overload by delivering notifications in a structured, prioritized manner rather than simultaneously
Solution Approach 2:
The notification parameters are dynamically changed based on the operational context. When both controls operate concurrently, the system adjusts notification parameters such as timing, sequence, and content priority to balance information completeness with driver comfort, preventing information overload while ensuring critical information is conveyed
2Ease of operation
If only deceleration target is notified during concurrent operation, then information overload is reduced, but driver uneasiness increases due to missing critical risk factor information
Solution Approach 1:
The notification parameters are dynamically adjusted based on the relative importance and urgency of different situations. Risk factors are assigned higher notification priority parameters, ensuring they are always communicated to the driver during concurrent operations, while deceleration target notification parameters are adjusted accordingly to maintain driver comfort
3Reliability
If risk factor notification priority is increased during concurrent operation, then driver safety awareness is improved, but deceleration target notification may be delayed or omitted
Solution Approach 1:
The notification system segments information delivery into priority tiers, ensuring risk factor notifications are delivered first with highest reliability, while deceleration target notifications are delivered subsequently or simultaneously through alternative channels, minimizing time loss while maintaining safety notification reliability
Solution Approach 2:
The system performs preliminary assessment of notification priorities before actual notification delivery. When concurrent operations are detected, the system pre-determines the notification sequence, ensuring risk factors are notified with appropriate priority while scheduling deceleration target notifications to minimize delay
Data Source
AI summary
A driving assist system assists driving of a vehicle. A deceleration target includes at least one of a preceding vehicle, a mandatory stop line, a mandatory stop sign, a traffic signal, and a stop line before the traffic signal that exist ahead of the vehicle. A risk factor includes at least one of a pedestrian, a bicycle, a motorcycle, an oncoming vehicle, and a parked vehicle that exist ahead of the vehicle. The driving assist system executes: deceleration assist control that automatically decelerates the vehicle before the deceleration target; and risk avoidance control that automatically performs at least one of steering and deceleration of the vehicle so as to avoid the risk factor. When both the deceleration assist control and the risk avoidance control operate concurrently, the driving assist system notifies a driver of the vehicle of not the deceleration target but the risk factor.