Adjacent Lane Display Timing in Low-Speed Automated Driving
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Solution Overview
Problem
In autonomous driving vehicles, the prohibition of autonomous lane changes when vehicle speed is below a predetermined value leads to delayed communication of lane change permissibility to the driver, as the adjacent lane is hidden until the vehicle reaches the required speed, potentially delaying the recognition of the destination lane by the driver.
Innovation Solution
An automated driving system that includes a vehicle speed detection device, a display device, and a processor to control the display content, allowing the processor to hide the adjacent lane when an autonomous lane change is prohibited but start displaying it before the vehicle reaches the predetermined speed if acceleration is planned, and to display only the running and destination lanes during a lane change, while also detecting surrounding vehicles and controlling the vehicle to avoid those necessitating deceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the adjacent lane is hidden when autonomous lane change is prohibited (to avoid misleading the driver), then the driver is not misled about lane change permissibility, but the timing by which the system recognizes the destination lane is conveyed to the driver is delayed
Solution Approach 1:
The display device starts displaying the adjacent lane before the vehicle reaches the predetermined speed threshold, even though autonomous lane change is currently prohibited. This preliminary display action allows the driver to see the destination lane earlier, preparing them for the upcoming lane change opportunity without falsely indicating that lane change is immediately permitted.
Solution Approach 2:
The display device dynamically adjusts its behavior based on the vehicle's speed and lane change permission status. When the vehicle approaches the speed threshold for lane change permission, the display transitions from hiding the adjacent lane to showing it, creating a smooth informational transition that prepares the driver for the upcoming change in system capability.
2Reliability
If the adjacent lane is always hidden when autonomous lane change is prohibited, then the driver is not misled about lane change permissibility, but the driver's awareness of the destination lane is delayed until the speed reaches the predetermined value
Solution Approach 1:
The system performs a preliminary display of the adjacent lane before the vehicle actually qualifies for autonomous lane change. This early display action provides the driver with advance information about the destination lane, reducing information loss and improving driver awareness without compromising the accuracy of lane change permission status.
Solution Approach 2:
The display device dynamically responds to the vehicle's approaching speed threshold by transitioning from a hidden state to a visible state, providing timely information about the destination lane while maintaining accurate representation of the current lane change permission status.
Data Source
AI summary
The automated driving system includes a vehicle speed detection device for detecting a speed of a vehicle, a display device capable of displaying a running lane and an adjacent lane of the vehicle, and a processor configured to control display content of the display device, and execute an autonomous lane change of the vehicle. The processor is configured to prohibit the autonomous lane change of the vehicle when a speed of the vehicle is less than a predetermined value. The processor is configured to hide the adjacent lane when the autonomous lane change is prohibited and start displaying the adjacent lane before the speed of the vehicle reaches the predetermined value if it is planned for the vehicle to accelerate from a speed below the predetermined value to a speed equal to or greater than the predetermined value in order to carry out the autonomous lane change.