Autonomous Vehicle Trajectory Display With Adaptive Trust Zones

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Solution Overview

Problem

Passengers in autonomous vehicles often lack trust due to unfamiliarity with the vehicle's capabilities, leading to unnecessary intervention by drivers.

Innovation Solution

A vehicle system that uses external sensors to detect objects and determine navigation trajectories based on user-selected trust zones, with feedback data used to adjust trust parameters and display trajectories and trust zones on a display device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If the autonomous vehicle operates with full autonomous capability without displaying trust zones, then the vehicle's automation level is high, but passenger trust is low and unnecessary driver intervention occurs

Engineering Contradiction:
Improveautonomous navigation capabilityVSAvoidpassenger trust in autonomous system
Core Design Contradiction:
Extent of automationVSReliability

Solution Approach 1:

The patent introduces trust zones as an intermediary visual element between the autonomous vehicle system and the passenger. These trust zones are displayed on the display device to show the spatial boundaries within which the autonomous system feels confident operating. This intermediary visualization mediates the relationship by making the abstract autonomous decision-making process concrete and understandable, thereby building passenger trust without reducing automation capability.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system implements feedback by continuously monitoring passenger trust indicators (such as trust zone selections and intervention patterns) and adjusting the trust zone parameters accordingly. When passengers show signs of discomfort or unnecessary intervention, the system can modify trust zone sizes or positions to better align with passenger comfort levels, creating a closed-loop feedback mechanism that enhances trust while maintaining automation.

Inventive Principle:
Principle #23Feedback

2Reliability

If the vehicle displays detailed trajectory and trust zone information, then passenger trust and understanding increase, but the device complexity and information processing requirements increase

Engineering Contradiction:
Improvepassenger trust in autonomous systemVSAvoiddisplay system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the complex autonomous navigation information into distinct, manageable visual components: trust zones, trajectories, and detected objects. Each element is displayed separately and clearly on the display device, allowing passengers to understand one aspect at a time rather than overwhelming them with all information simultaneously. This segmentation reduces perceived complexity while maintaining comprehensive information delivery.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system applies local quality by providing detailed trajectory and trust zone information only in regions or situations where it is most relevant to passenger understanding. For example, trust zones are prominently displayed when the vehicle is operating near boundaries or in uncertain environments, while simpler displays may suffice during routine autonomous operation. This selective information presentation reduces overall system complexity while maintaining trust-building effectiveness.

Inventive Principle:
Principle #3Local quality

3Adaptability or versatility

If the trust parameter is dynamically adjusted based on feedback data, then the system adapts to passenger preferences improving trust, but the control system complexity increases

Engineering Contradiction:
Improvetrust parameter adaptationVSAvoidcontrol system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system performs preliminary action by pre-defining multiple trust parameter sets corresponding to different passenger preference profiles (e.g., conservative, moderate, aggressive trust levels). Instead of implementing complex real-time dynamic adjustment algorithms, the system allows passengers to select from these pre-configured trust parameter sets before autonomous operation begins. This preliminary configuration approach achieves adaptability while significantly reducing control system complexity compared to fully dynamic adjustment.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements dynamics by allowing trust parameters to be adjusted during operation based on detected passenger feedback, such as unnecessary interventions or expressed comfort levels. The trust zones and trajectories are dynamically modified in response to these feedback signals, enabling the system to adapt to passenger preferences in real-time. This dynamic adjustment is implemented through relatively simple rule-based modifications rather than complex algorithms, balancing adaptability with controlled system complexity.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12311982B2Systems and methods for displaying trajectories for autonomous vehicles
Publication Date: 2025.05.27 TOYOTA JIDOSHA KK
  • US12311982B2 patent drawing
  • US12311982B2 patent drawing
  • US12311982B2 patent drawing

AI summary

A vehicle includes a computing device configured to detect an object in an external environment via an external sensor. The computing device determines a trajectory for navigation relative the object based on a trust zone. The trust zone is selected based on a trust parameter. The computing device instructs a display device to render a representation of the object and the trajectory relative the object, and determines whether to modify the trust parameter based on feedback data received in response to navigation.