Vehicle Signal Notification Logic for Adjacent Gate Red-Light Suppression
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Solution Overview
Problem
Existing notification devices mistakenly alert drivers about stop signals at adjacent gates when passing through a gate where the signal is not lit, causing confusion.
Innovation Solution
A notification device equipped with an on-vehicle sensor, information presentation device, and processor that suppresses alerts when a red signal at an adjacent gate is detected based on specific conditions, such as the absence of a lit signal above the vehicle's path and the presence of a building between the signal and the path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the notification device alerts the driver about any detected red signal, then the driver is notified of potential stop signals, but false alerts occur when red signals at adjacent gates are detected
Solution Approach 1:
The notification device applies local quality by determining the spatial relationship between the detected red signal and the vehicle's trajectory. It specifically checks whether the red signal is located above the trajectory (within a predetermined area) versus to the left or right. This spatial differentiation allows the device to selectively notify the driver only when the red signal is relevant to the vehicle's path, eliminating false alerts from adjacent gate signals while maintaining reliable detection of actual stop signals.
2Device complexity
If the notification device uses simple red signal detection, then the device complexity is low, but it cannot distinguish between relevant and irrelevant stop signals
Solution Approach 1:
The notification device resolves the contradiction by adding a spatial dimension to the detection logic. Instead of merely detecting the presence of a red signal, the device evaluates the signal's position relative to the vehicle's trajectory in a two-dimensional space (above versus left/right of the trajectory). This dimensional approach allows simple detection logic to be enhanced with contextual spatial information, enabling the device to distinguish between relevant and irrelevant stop signals without significantly increasing complexity.
Data Source
AI summary
The notification device is equipped with an on-vehicle sensor that obtains information about objects existing around the own vehicle; an information presentation device that presents information to the driver of the own vehicle; and a processor capable of executing an attention-drawing process to draw the driver's attention to a traffic signal positioned in front of the own vehicle, by presenting predetermined information to the information presentation device when the processor detects, based on the information obtained from the on-vehicle sensor, that the red signal of the traffic signal is lit. The processor is configured not to execute the attention-drawing process when the condition is met for recognizing that the red signal of a traffic signal of an adjacent gate to the gate predicted to be passed by the own vehicle is lit.