Vehicle Driving Mode Control for Lane Reduction Lane Changes
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Solution Overview
Problem
Automatic driving systems terminate prematurely when lane changes are required due to a decrease in the number of lanes, leading to inadequate vehicle control during lane changes.
Innovation Solution
A vehicle control device that recognizes the surrounding situation, controls steering and acceleration/deceleration, and outputs predetermined information to facilitate lane changes, continuing the current driving mode if the lane change is initiated before a specific section and changing to a more demanding mode if the change occurs after notification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the automatic driving system terminates driving mode when the number of lanes decreases, then the system ensures safety by stopping at appropriate positions, but the system cannot perform appropriate vehicle control when the driver changes lanes due to lane decrease notifications
Solution Approach 1:
The system dynamically adjusts the driving mode based on the timing of lane change completion relative to notification. If lane change is completed before the notification is issued, the system maintains the current automatic driving mode. If lane change is completed after notification, the system transitions to manual driving mode. This dynamic adaptation resolves the contradiction by making the system responsive to actual driver intentions while maintaining safety protocols.
Solution Approach 2:
The system uses feedback from the notification timing and lane change completion status to determine the appropriate driving mode. The notification serves as a feedback mechanism that informs the system of upcoming lane restrictions, and the system adjusts its behavior based on whether the driver acts on this notification. This feedback loop enables the system to adapt to driver actions while maintaining safety.
2Ease of operation
If the system outputs notification before reaching the section where driving mode cannot be continued, then the system provides advance warning to the driver, but the system creates confusion about when to maintain automatic driving mode versus switching to manual mode
Solution Approach 1:
The system issues a notification in advance before the vehicle reaches the section where automatic driving cannot be continued. This preliminary action allows the driver to be aware of upcoming lane restrictions while the system still maintains automatic driving mode. The notification serves as a preparatory signal without forcing an immediate mode change, resolving the contradiction by providing advance warning while maintaining operational clarity.
Solution Approach 2:
The driving mode transitions dynamically based on the timing of lane change completion relative to the notification. The system maintains automatic driving mode if the lane change is completed before notification, and switches to manual mode if completed after notification. This dynamic transition rule provides clear, unambiguous guidance to the driver about when mode changes occur, eliminating confusion while preserving the benefit of advance notification.
3Productivity
If the system continues the first driving mode after lane change completion before notification, then the system maintains smooth operation, but the system may not adequately prepare the occupant for upcoming manual driving requirements
Solution Approach 1:
The system issues a notification before the vehicle reaches the section where automatic driving cannot be continued, serving as preliminary information to the occupant. Even though the current driving mode is maintained for smooth operation, the notification ensures the occupant is aware of upcoming lane restrictions and potential mode changes, resolving the contradiction by maintaining operational smoothness while preserving occupant awareness.
4Loss of information
If the system changes to the second driving mode with larger occupant task after lane change completion after notification, then the system ensures occupant awareness of manual driving requirements, but the system disrupts the smoothness of vehicle operation
Solution Approach 1:
The system dynamically determines the driving mode based on the timing of lane change completion relative to notification. By transitioning to manual driving mode only when the lane change is completed after notification, the system ensures occupant awareness of manual driving requirements while maintaining smooth operation during automatic driving. This dynamic approach resolves the contradiction by applying mode changes only when necessary and appropriate.
Data Source
AI summary
A vehicle control device includes a recognition part, a driving control part, and an output control part. When determining there is a section where a current driving mode cannot be continued in a first lane and the vehicle changes to a second lane, the output control part outputs predetermined information, including first and second information, before reaching the section. When detecting an intention to change lanes after outputting the first information, and a lane change to the second lane is completed before outputting the second information, the driving control part continues a first driving mode executed during traveling in the first lane even after the lane change is completed, and when detecting the intention to change lanes after outputting the first information, and the lane change to the second lane is completed after outputting the second information, the driving control part changes to a driving mode imposing a larger task.