Driver Re-engagement Assessment System for Autonomous Vehicles
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Solution Overview
Problem
Current autonomous vehicle systems lack an effective method to assess a driver's readiness to re-engage manual control, relying on preset voting schemes that may not cover all situations and can be confusing for potential drivers.
Innovation Solution
A driver re-engagement assessment system that includes an X-by-wire device, a controller, a user interface, a test execution module, and a test evaluation module, which initiates and evaluates a re-engagement test to determine the occupant's performance and enable manual control only upon passing the test.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a preset voting scheme is used to determine driver re-engagement, then the system is simple to implement, but it does not cover all situations and is challenging for drivers to understand
Solution Approach 1:
The re-engagement assessment is divided into multiple discrete test components including cognitive tests, physical tests, and situational awareness tests. Each test evaluates a specific aspect of driver readiness, allowing the system to comprehensively assess various situations while maintaining clear, modular test structures that are easier to understand and implement.
2Reliability
If a comprehensive re-engagement test is implemented to verify driver readiness, then driver safety is improved, but the system complexity increases
Solution Approach 1:
The controller serves multiple functions by integrating cognitive test execution, physical test coordination, situational awareness monitoring, and final assessment decision-making. This multi-functional approach enables comprehensive driver readiness verification while consolidating system complexity into a single coordinating unit rather than distributing it across multiple separate systems.
3Measurement precision
If multiple test components are used to assess driver readiness, then assessment accuracy is improved, but the time required for re-engagement increases
Solution Approach 1:
The re-engagement assessment employs periodic testing where cognitive, physical, and situational awareness tests are administered in structured intervals. This periodic structure allows the system to efficiently evaluate multiple aspects of driver readiness systematically, maintaining high assessment accuracy while managing the total time required through organized test sequencing and timing.
Data Source
AI summary
A host vehicle includes a driver re-engagement assessment system and an X-by-wire device adapted for both manual control and automated control by an automated guidance system. The driver re-engagement assessment system includes a controller, a user interface, and test execution module and a test evaluation module. The user interface is configured to interface with an occupant and output an occupant directive signal for manual control to the controller. The test execution module initiates an occupant re-engagement test upon receipt of the occupant directive signal by the controller. The test evaluation module is configured to receive an occupant performance signal indicative of occupant performance during the re-engagement test, and evaluate the occupant performance signal to determine a test pass result and a test fail result. The manual control of the host vehicle is assumed by the occupant upon the determination of the test pass result.