Vehicle Control Device Emergency Vehicle Preparation
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Solution Overview
Problem
Existing vehicle control systems struggle to rapidly prepare for the passage of emergency vehicles, often failing to recognize them in time, leading to delayed transitions in autonomous driving states and potential interference with emergency vehicle travel.
Innovation Solution
A vehicle control device and method that includes a recognizer to identify surrounding situations and a driving controller to manage acceleration, deceleration, and steering, transitioning the host vehicle to a higher automation state when a rearward vehicle is recognized moving in the vehicle's width direction, ensuring rapid preparation for emergency vehicle passage by adjusting driving states based on recognized conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the host vehicle operates in a second driving state with higher automation rate, then the tasks required of the occupant are reduced, but the response time to recognize and prepare for emergency vehicle passage is delayed
Solution Approach 1:
The system performs preliminary action by transitioning to the first driving state with lower automation rate before the emergency vehicle is fully recognized, based on detection of rearward vehicle movement in the width direction. This anticipatory state change prepares the system for potential emergency vehicle passage, reducing the response time delay while maintaining reduced occupant tasks during normal operation in the second driving state.
2Reliability
If the driving state is transitioned to the first driving state based on rearward vehicle movement, then the preparation for emergency vehicle passage is improved, but the risk of misdetecting normal lane changes as emergency vehicle approach increases
Solution Approach 1:
The system applies dynamics by making the driving state adaptable and changeable based on real-time detection of rearward vehicle movement in the width direction. The driving controller dynamically transitions between first and second driving states, allowing the system to adjust its automation level according to the detected situation, thereby improving emergency vehicle passage preparation while maintaining the ability to respond to varying conditions.
Solution Approach 2:
The system uses feedback from the recognizer about rearward vehicle movement in the width direction to trigger driving state transitions. This feedback mechanism allows the system to respond to actual detected conditions, improving reliability in emergency vehicle detection while the feedback loop enables continuous monitoring to distinguish between genuine emergency situations and normal lane changes.
3Loss of time
If the host vehicle transitions to the first driving state rapidly, then the preparation for emergency vehicle passage is improved, but the stability of the driving state control is reduced
Solution Approach 1:
The system performs preliminary action by transitioning to the first driving state before full emergency vehicle recognition occurs, based on early detection of rearward vehicle movement. This anticipatory transition reduces preparation time while the controlled nature of the state change, triggered by specific detection criteria, maintains overall system stability by avoiding premature or unnecessary transitions.
Data Source
AI summary
A vehicle control device includes a recognizer that is configured to recognize a surrounding situation of a host vehicle and a driving controller that is configured to control acceleration or deceleration and steering of the host vehicle on the basis of a recognition result of the recognizer. The driving controller is configured to cause the host vehicle to operate in at least any of a first driving state and a second driving state in which a rate of automation is higher or tasks required of an occupant are fewer than in the first driving state, and is configured to transition a driving state of the host vehicle to the first driving state on the basis of movement of a rearward vehicle that travels rearward of the host vehicle recognized by the recognizer in a direction of a vehicle width in a case where the host vehicle is operating in the second driving state.