Vehicle Speeding Alerts Based on Preceding Vehicle Position
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Solution Overview
Problem
Conventional driving assistance devices fail to provide timely and appropriate notifications when a vehicle continues to exceed speed limits, leading to potential disregard by drivers, and constant notifications become bothersome.
Innovation Solution
A driving assistance device that provides a first notification when the vehicle exceeds speed limits and additional notifications based on specific alert conditions related to the relative positional relationship with preceding vehicles, such as overtaking or acceleration, ensuring drivers are alerted appropriately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional notifications are provided when the vehicle continues to exceed speed limits, then the driver is more likely to be reminded of the speeding, but the driver may consider the notifications to be irksome
Solution Approach 1:
The notification system dynamically adjusts its behavior based on real-time driving conditions. The ECU determines whether to issue additional notifications by evaluating the current driving state, including whether the vehicle is in an overtaking situation or approaching a curve, rather than using a fixed notification pattern. This dynamic adaptation allows the system to provide reminders when necessary while avoiding unnecessary notifications that would annoy the driver.
Solution Approach 2:
The system changes the notification parameters based on the driving context. Instead of providing constant notifications, the ECU modifies the notification behavior by considering multiple parameters such as vehicle speed, road geometry (curves), and relative position to preceding vehicles. When the evaluation result indicates a safe context for additional notifications, the system issues reminders; otherwise, it suppresses them to avoid driver annoyance.
2Object-affected harmful factors
If the notification is given only once when the vehicle exceeds speed limits, then the driver is not constantly disturbed, but the driver may continue driving without noticing the speed limit violation
Solution Approach 1:
The notification system implements a feedback mechanism where the ECU continuously monitors the vehicle's speed and driving state after issuing an initial notification. Based on this feedback, the system determines whether additional notifications are necessary. The feedback loop evaluates whether the driver has responded to the initial notification or continues to speed, and adjusts subsequent notification behavior accordingly to maintain driver awareness without excessive disturbance.
Solution Approach 2:
The system transitions from a static single-notification approach to a dynamic multi-stage notification strategy. The ECU evaluates the driving context at each stage to determine whether to issue additional notifications. This dynamic approach ensures that drivers receive repeated reminders when necessary (maintaining awareness) while avoiding unnecessary notifications when the driving context makes them appropriate (reducing annoyance).
Data Source
AI summary
The driving assistance ECU includes a speed limit acquisition unit that acquires a speed limit applied to the own vehicle, and a vehicle speed acquisition unit that acquires an own vehicle speed that is a speed of the own vehicle, and performs a first notification (a first speeding notification) when the own vehicle speed is higher than the speed limit. The driving assistance ECU performs additional notification (second speeding notification) when it is determined that a predetermined alert condition is satisfied when the vehicle speed is predicted to increase or increase due to the relative positional relation between the preceding vehicle traveling in front of the own vehicle and the own vehicle in a state where the state where the own vehicle speed is higher than the speed limit continues after the first notification.