Shadow ADS Takeover Timing Beyond ODD Boundaries
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Automated driving systems (ADS) face challenges in transitioning control from automated to manual operation smoothly, especially when drivers are fatigued or in environments beyond the ADS's capabilities, leading to potential safety risks due to inadequate timing for takeover requests and activation of safety features.
Innovation Solution
The implementation of a shadow ADS system that receives sensor data to determine an end boundary for disengaging ADS features, sets a disengage boundary earlier to allow additional time for driver takeover, and activates safety features if the driver does not respond, using visual or audio indicators tailored to the driver's conditions and historical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the ADS disengages at the end boundary, then the automation capability is maximized, but the driver may not have sufficient time to respond to takeover requests
Solution Approach 1:
The system performs preliminary action by issuing takeover requests to the driver before the ADS reaches the end boundary. The disengage boundary is set earlier than the end boundary, allowing the driver sufficient time to respond and take over control before automation must be disengaged.
2Productivity
If safety features are activated at the end boundary, then the automation operation is optimized, but the transition to manual control becomes unsafe
Solution Approach 1:
The system applies preliminary anti-action by activating safety features and issuing takeover requests before the end boundary is reached. This prevents the harmful effect of unsafe transitions by ensuring the driver has time to respond and take over control before automation is disengaged.
3Extent of automation
If the disengage boundary is set at the end boundary, then the ADS operates at full capability, but the driver takeover timing becomes inadequate
Solution Approach 1:
The disengage boundary is set earlier than the end boundary to perform the disengagement action in advance. This preliminary action ensures the driver has adequate time to respond to takeover requests and smoothly transition to manual control while maintaining full ADS operational capability up to the end boundary.
Data Source
AI summary
Systems and methods are provided for applying shadow assisted driving systems (ADS) to a vehicle. The system can receive sensor data and deliver a takeover request to the vehicle operator based on the sensor data. An end boundary can be determine to disengage an ADS feature from the vehicle. A disengage boundary can be set where the vehicle can disengage before the end boundary. The system can determine when the vehicle operator responds to the takeover request based on the sensor data, which can cause the ADS to shadow the vehicle operator based on a determination that the vehicle operator did not take over operation of the vehicle at the disengage boundary.