Driving Automation Level Lowering Feasibility Determination
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Solution Overview
Problem
Existing automated driving systems fail to consider the relationship with surrounding vehicles when determining the feasibility of lowering the driving automation level, leading to issues with high driving loads even when the driver and road conditions are suitable.
Innovation Solution
A system that includes a surrounding vehicle information obtainment unit, a driving load calculator, and a feasibility determination unit to assess the driving load based on surrounding vehicle information, determining whether to lower the driving automation level by calculating a driving load value and outputting the result to the automated driving control device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the driving automation level is lowered to transfer authority to the driver, then the system complexity is reduced and driver engagement is improved, but the driving load on the driver increases when surrounding vehicles are present
Solution Approach 1:
The system continuously monitors surrounding vehicle information and feeds this data back to the driving load calculator, which adjusts the driving load assessment in real-time. This feedback mechanism enables dynamic determination of whether lowering the driving automation level is feasible, ensuring that authority transfer to the driver occurs only when surrounding vehicles do not create excessive driving load.
Solution Approach 2:
The system changes the parameter used for driving automation level determination by incorporating surrounding vehicle information into the driving load calculation. This parameter change allows the system to adaptively adjust the driving automation level based on the actual driving environment, particularly the presence and characteristics of surrounding vehicles.
2Measurement precision
If surrounding vehicle information is incorporated into driving load calculation, then the accuracy of feasibility determination is improved, but the system complexity increases
Solution Approach 1:
The system segments the driving load assessment into distinct components: basic driving load calculation and surrounding vehicle impact assessment. The surrounding vehicle information obtainment unit, driving load calculator, and feasibility determination unit operate as separate functional modules, each handling a specific aspect of the overall determination process. This segmentation improves measurement precision while managing system complexity through modular design.
Data Source
AI summary
The present invention has an object of determining feasibility of lowering a driving automation level of an automated driving vehicle, based on a driving load considering a relationship with surrounding vehicles. An automatic-driving-level lowering feasibility determination apparatus according to the present invention includes: a surrounding vehicle information obtainment unit obtaining surrounding vehicle information; a driving load calculator calculating, based on the surrounding vehicle information, a driving load value indicating a magnitude of a driving load on the subject vehicle; a driving-automation-level lowering feasibility determination unit determining feasibility of lowering a driving automation level of the subject vehicle, based on the driving load value; and an output controller outputting, to an automated driving control device, a result of the feasibility determined by the driving-automation-level lowering feasibility determination unit.