Automated Driving Activation via Adaptive Assistance Thresholds
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Solution Overview
Problem
Existing automated driving systems require complex user interactions to establish activation conditions, leading to driver distraction and cognitive overload due to difficult-to-understand visual interfaces.
Innovation Solution
A method that adapts the activation threshold and intervention characteristics of driving-assistance systems to influence the driving situation dynamically, allowing for early and subtle interventions to facilitate a seamless transition to higher autonomy levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If complex visual interfaces are used to communicate activation conditions, then the automated driving function can be activated, but driver distraction and cognitive overload increase
Solution Approach 1:
The driving-assistance system automatically monitors and establishes the preconditions for automated driving activation without requiring active user intervention. The system self-adjusts parameters such as spacing and speed to meet activation criteria, eliminating the need for complex visual interfaces and reducing driver cognitive load.
Solution Approach 2:
The system proactively prepares the driving situation by adjusting vehicle parameters (spacing, speed) before the activation threshold is reached. This preliminary action ensures that when the driver does interact with the system, the conditions are already favorable for automated driving activation, simplifying the user interaction required.
2Extent of automation
If the activation threshold is lowered to provide earlier assistance, then the transition to higher autonomy is facilitated, but the system may intervene more frequently
Solution Approach 1:
The activation threshold is made dynamic rather than fixed. The system adapts the threshold based on current driving conditions, vehicle state, and historical data. This allows the system to provide earlier assistance when conditions are favorable while avoiding unnecessary interventions when the driving situation is already stable, thus facilitating transition to higher autonomy without excessive complexity.
3Extent of automation
If the driving situation is actively adjusted to meet activation conditions, then automated driving can be activated, but the current driving behavior is disrupted
Solution Approach 1:
The system makes gradual, incremental adjustments to driving parameters (spacing, speed, acceleration) rather than abrupt changes. These parameter changes are designed to smoothly transition the driving situation toward activation conditions while maintaining stability and comfort for the driver, avoiding disruptive interventions.
Data Source
AI summary
A method is disclosed for assisting in an activation of an automated driving function of a vehicle that includes at least one driving-assistance system configured to influence the driving situation of the vehicle as soon as an activation threshold is reached. The method includes determining a current driving situation of the vehicle; ascertaining that the current driving situation of the vehicle differs from a specified driving situation in which the automated driving function can be activated; and adapting the activation threshold and/or an intervention characteristic of the at least one driving-assistance system.