Intersection Risk Mitigation Control for Remote-Operated Vehicles
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Solution Overview
Problem
The activation of the risk mitigation function (RMF) in the vicinity of an intersection poses a risk of disturbing traffic flow or causing contact or collision with other traffic participants due to the difficulty in guiding the vehicle to a refuge location, especially at intersections.
Innovation Solution
The driving control apparatus employs a risk mitigation function that sets a target stopping location by reducing encounter points and minimizing the influence on traffic flow by considering multiple candidate locations and evaluating risk factors, using sensors and communication systems to determine a safe stopping area away from intersections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle is guided to a refuge location when RMF is activated in the vicinity of an intersection, then the vehicle can be safely stopped, but the risk of disturbing traffic flow or causing contact or collision with other traffic participants increases
Solution Approach 1:
The system performs preliminary actions by searching for and evaluating multiple candidate refuge locations before RMF activation occurs. The automated operation device pre-identifies potential stopping areas and assesses their safety characteristics, so that when RMF activation is necessary, the vehicle can be guided to a pre-evaluated safe location without causing traffic disturbances.
Solution Approach 2:
The system introduces an intermediary evaluation mechanism that assesses the safety of refuge locations based on multiple factors including distance from intersections, presence of other traffic participants, and traffic flow conditions. This intermediary safety assessment acts as a mediator between the need to stop the vehicle and the need to avoid disturbing traffic flow.
2Loss of time
If the vehicle stops at a refuge location close to the intersection, then the travel distance is shortened, but the risk of encountering other traffic participants and disturbing traffic flow increases
Solution Approach 1:
The system changes the evaluation parameters for selecting refuge locations by considering multiple factors including distance from intersections, presence of other traffic participants, and traffic flow conditions. Instead of simply selecting the nearest refuge location, the system adjusts the selection criteria to balance travel distance with safety, choosing locations that minimize both travel time and risk of encountering other traffic participants.
Data Source
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AI summary
[Problem to be Solved] To lower the risk of disturbing traffic flow or contact/collision with other traffic participants at an intersection when a risk mitigation function is activated. [Solution] A driving control apparatus for a vehicle 100 provided with an automated operation device 10 for executing automated driving by remote monitoring and control has a risk mitigation function (RMF) that executes risk mitigation control for stopping the vehicle 100 at a target stopping location S in a case in which continuation of remote monitoring and control has become difficult. The automated operation device 10 is configured to execute a search for target stopping location candidates on the basis of location information about the vehicle and map information during the automated driving in preparation for RMF activation, and in a case in which the RMF is activated in the vicinity of an intersection, to select, as the target stopping location, a target stopping location candidate with the least number of encounter points between the vehicle 100 and pedestrians at the intersection from among a plurality of target stopping location candidates including a target stopping location candidate located on a path different from a target path PA of the automated driving, on the basis of detection information about pedestrians at the intersection acquired by V2X communication 26, 26R and/or an in-vehicle camera 212.