Autonomous Driving Mode Switch Notification System
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Solution Overview
Problem
Current autonomous driving systems lack effective mechanisms to safely transition from autonomous to manual driving modes, particularly when road conditions become inappropriate for autonomous operation, leading to potential safety hazards due to inadequate driver notification and preparation time.
Innovation Solution
A driver information system that determines the vehicle's status and the road section's appropriateness for autonomous driving, providing early notifications to the driver with distance and time until reaching an inappropriate section, using stored road characteristics data and vehicle image acquisition to ensure timely handover to manual control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the autonomous driving system operates without early warning mechanisms, then the system complexity is reduced, but the driving safety deteriorates due to insufficient driver preparation time for mode switching
Solution Approach 1:
The system performs preliminary evaluation of road sections ahead to identify inappropriate areas for autonomous driving before the vehicle reaches them. Early warnings are issued to the driver in advance, allowing sufficient time to prepare for mode switching. This preliminary action ensures safety without requiring complex real-time intervention mechanisms.
Solution Approach 2:
The road ahead is divided into multiple sections, with each section evaluated independently for appropriateness for autonomous driving. The system segments the driving environment into manageable units (road sections) and provides targeted warnings for specific sections, reducing the overall system complexity while maintaining comprehensive safety monitoring.
2Loss of information
If the system provides detailed information about inappropriate road sections ahead, then the driver's awareness and safety improve, but the information processing requirements and system complexity increase
Solution Approach 1:
The system extracts only the essential information about inappropriate road sections (location, distance, and basic characteristics) from the complete road data set. By taking out only the critical safety-related information and presenting it to the driver, the system maintains high driver awareness while avoiding the complexity of processing and displaying all available road data.
3Productivity
If the vehicle travels at high speed through appropriate autonomous driving sections, then the productivity increases, but the time available for driver handover decreases when an inappropriate section is encountered
Solution Approach 1:
The system continuously evaluates road sections ahead and issues early warnings about upcoming inappropriate areas, even when the vehicle is traveling at high speed. This preliminary notification provides the driver with sufficient advance notice to prepare for mode switching, ensuring that high travel speeds do not compromise handover preparation time.
4Reliability
If the system continuously monitors and evaluates road sections ahead, then the driving safety improves, but the energy consumption and computational load increase
Solution Approach 1:
The continuous monitoring function is segmented into discrete evaluations of specific road sections ahead. Instead of continuously analyzing all road data, the system evaluates individual road sections at appropriate intervals and only processes information for sections that may be inappropriate for autonomous driving. This segmented approach maintains safety while reducing overall computational load and energy consumption.
Data Source
Figure 1~2
Figure 3A~3C
Figure 4A~4C
AI summary
A driver information system (10) for a vehicle (1) comprises a data storing unit (12) which stores road characteristics data associated with a plurality of road sections (221, 222) which are each designated as having been used multiple times by the vehicle (1) for driving in at least two past time instances, a determination unit (11) which determines a first status of the vehicle (1) indicative of whether the vehicle is in an autonomous driving mode or in a manual driving mode, and determines a second status of a road section (221) of the plurality of road sections, which is ahead of the vehicle (1) in the driving direction, being indicative of whether the road section (221) is appropriate or inappropriate for the autonomous driving mode, and a driver information unit (11) which provides a notification (60) to the driver indicative of a switch to manual driving mode if the determination unit (11) determines that the vehicle (1) is in the autonomous driving mode and the second status indicates that the road section (221) is inappropriate for autonomous driving mode. The driver information unit (11) provides the notification (60) to the driver in advance of an event (31) at which the vehicle (1) is expected to reach the road section (221) with the notification (60) including information of at least one of a distance (602) and time period (601) until the event (31) at which the vehicle (1) is expected to reach the road section (221).