Traffic Signal Start Alerts With Adaptive Delay Timing
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Solution Overview
Problem
Existing vehicle operating assistance systems often issue frequent notifications that can annoy drivers and fail to effectively prompt them to start the vehicle at the appropriate time, leading to inefficiencies and potential safety issues.
Innovation Solution
A vehicle operating assistance system that includes a travel environment recognition unit to detect traffic signal status, issuing an advance notification when the light is about to change and a clear-to-start notification after a delay, with adjustable delay times based on environmental conditions and previous notifications, along with engine output suppression to prevent premature acceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequent notifications are issued to prompt drivers to start the vehicle, then the driver response effectiveness improves, but driver annoyance increases
Solution Approach 1:
The system issues an advance notification before the traffic signal actually changes, giving the driver early warning to prepare for starting the vehicle. This preliminary action allows the driver to mentally prepare without being surprised by sudden notifications, reducing annoyance while maintaining response effectiveness.
Solution Approach 2:
The notification system dynamically adjusts its behavior based on vehicle status and traffic signal state. It issues different types of notifications (advance notification vs. clear-to-start notification) at different times, creating a dynamic notification strategy that adapts to the situation rather than using fixed frequent notifications.
2Productivity
If the clear-to-start notification is issued immediately when external conditions become clear, then the productivity of vehicle start improves, but the reliability of preventing premature acceleration decreases
Solution Approach 1:
The system issues an advance notification before the clear-to-start notification, allowing the driver to prepare mentally and physically for vehicle start. This preliminary warning ensures the driver is ready and aware, reducing the risk of premature acceleration while maintaining efficient vehicle start when the signal actually changes.
Solution Approach 2:
The system continuously monitors both the traffic signal state and vehicle status, using this feedback to determine the appropriate notification timing. By feedback-driven timing adjustment, the system ensures notifications are issued at optimal moments that balance quick response with safety.
3Loss of time
If the delay time for clear-to-start notification is shortened, then the response time improves, but the effectiveness of advance preparation decreases
Solution Approach 1:
The system introduces an advance notification phase before the clear-to-start notification, creating a two-stage preparation process. The advance notification gives drivers early warning to begin mental preparation, while the subsequent clear-to-start notification confirms it's safe to proceed, maintaining both quick response and effective preparation.
Solution Approach 2:
The notification process is segmented into two distinct phases: advance notification and clear-to-start notification. This segmentation allows each notification to serve a specific purpose - the first for preparation and the second for confirmation - thereby optimizing both timing and effectiveness without requiring a long overall delay.
Data Source
AI summary
A vehicle operating assistance system includes a travel environment recognition unit, a first notification unit, a second notification unit, and an adjustment unit. The travel environment recognition unit recognizes travel environment information of a vehicle including the traffic signal lighting status. The first notification unit issues an advance notification of a change in the lighting status to the driver who drives the vehicle, when the remaining time until the lighting status changes reaches a set time while the vehicle is stopped due to a red light. The second notification unit issues, to the driver, a clear-to-start notification for the vehicle, when a delay time elapses since it is determined, while the vehicle is stopped, that external conditions are clear for the vehicle to proceed. The adjustment unit adjusts the delay time to be longer when the advance notification is issued than when no advance notification is issued.