Driver-Sign Vehicle Detection for Safer Following Distance

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Solution Overview

Problem

Existing safe-driving assist systems do not effectively assist beginner or elderly drivers in maintaining a sufficient inter-vehicle distance, as they lack a mechanism to detect and respond to vehicles displaying specific driver signs, such as beginner or elderly driver signs, which are indicative of potential driving challenges.

Innovation Solution

A safe-driving assist system equipped with a drive recorder, control device, sensor group, and informing device that captures images, detects peripheral vehicles with driver signs, and outputs warning signals to inform the driver, adjusting speed and steering to maintain appropriate distances based on the presence of such signs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a dangerous-vehicle detection device notifies drivers about vehicles performing dangerous traveling, then drivers can perform defensive driving, but the system does not specifically assist beginner or elderly drivers who need to maintain larger inter-vehicle distances

Engineering Contradiction:
ImproveAdaptability to different driver typesVSAvoidInformation about driver experience level
Core Design Contradiction:
Adaptability or versatilityVSLoss of information

Solution Approach 1:

The system uses color-coded signs (e.g., blue for beginner drivers, red for elderly drivers) displayed on vehicles to visually indicate the driver's experience level or characteristics. This allows other drivers to quickly identify and adjust their driving behavior accordingly, providing tailored assistance to different driver types without complex communication systems

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The driver sign acts as an intermediary information carrier between the driver and other road users. Instead of directly communicating driver capabilities through complex systems, the sign provides a simple visual mediator that conveys essential information about the driver's experience level, enabling appropriate defensive driving behaviors

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the system detects and notifies all peripheral vehicles, then comprehensive safety monitoring is achieved, but the warning information becomes less prioritized and may overwhelm the driver

Engineering Contradiction:
ImproveSafety monitoring reliabilityVSAvoidDriver attention management
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system applies different levels of notification priority to different vehicles based on their displayed signs. Vehicles with beginner or elderly driver signs receive higher priority notification, while other vehicles are monitored but do not trigger the same level of driver alert. This localized quality approach ensures critical information stands out without overwhelming the driver with all notifications equally

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS20250010859A1Safe-driving assist system
Publication Date: 2025.01.09 TOYOTA JIDOSHA KK
  • US20250010859A1 patent drawing
  • US20250010859A1 patent drawing
  • US20250010859A1 patent drawing

AI summary

A safe-driving assist system is equipped in a vehicle including a drive recorder. The safe-driving assist system includes a control device and an informing device. The control device executes acquiring an image captured by the drive recorder, detecting a peripheral vehicle shown in the acquired image, determining whether a driver sign is displayed on the detected peripheral vehicle, and outputting a warning signal when the peripheral vehicle on which the driver sign is displayed has been detected. The informing device informs a driver about existence of the peripheral vehicle on which the driver sign is displayed, when the warning signal output by the control device has been received.