Drive Assist Warning Adjustment for Congested Lane Changes
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Solution Overview
Problem
Conventional blind spot monitor devices issue unnecessary warnings during lane changes in traffic congestion, causing annoyance to drivers due to low collision risk in congested lanes.
Innovation Solution
A drive assist apparatus that issues primary and secondary warnings based on traffic congestion status, adjusting the secondary warning level according to lane congestion, thereby preventing unnecessary warnings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blind spot monitor device issues a warning when another vehicle enters the assist area, then the driver is notified of the presence of the other vehicle, but unnecessary warnings are issued during lane changes in traffic congestion causing driver annoyance
Solution Approach 1:
The system changes the warning issuance parameters based on traffic congestion detection. When traffic congestion is detected in the ego lane and adjacent lane, the system suppresses blind spot warnings to avoid unnecessary driver annoyance. When traffic congestion is not detected, the system issues warnings normally to maintain safety notification reliability.
2Ease of operation
If the direction indicator is operated during traffic congestion, then the driver intends to change lanes, but the risk of contact is low due to slow speeds, making high-level warnings unnecessary
Solution Approach 1:
The system modifies warning behavior based on traffic congestion status. During traffic congestion with low speeds, the system suppresses secondary warnings even when the direction indicator is operated, as the low collision risk makes high-level warnings unnecessary. This allows lane change communication to proceed without excessive warning interference.
Data Source
AI summary
A drive assist apparatus for a vehicle is configured to issue a primary warning when a predetermined target present around the ego vehicle enters an assist area set around the ego vehicle, issue a secondary warning when a direction indicator of the ego vehicle is operated while the primary warning is being issued, and change the content of the secondary warning depending on whether or not the ego lane and the adjacent lane in the direction indicated by the direction indicator are in traffic congestion.