Vehicle Controller Lane Boundary Crossing Prevention
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Solution Overview
Problem
Existing auto-steering control systems in vehicles often cause unintended lane changes when following a lead vehicle, leading to unexpected crossings into opposite traffic lanes, which can frighten occupants and pose safety risks by bringing the vehicle close to on-coming vehicles.
Innovation Solution
A vehicle controller system that uses vehicle-to-vehicle communication to determine if the lead vehicle is likely to cross a traffic lane boundary into the opposite lane, and if so, stops the follow control to prevent the own vehicle from crossing the boundary, thereby maintaining safety and reducing occupant fright.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the own vehicle follows the lead vehicle using auto-steering control, then the own vehicle can maintain a safe distance from the lead vehicle, but the own vehicle may unintentionally cross the traffic lane boundary into the opposite lane when the lead vehicle crosses
Solution Approach 1:
The system performs preliminary determination of the lead vehicle's front situation (whether it is likely to cross the traffic lane boundary) before executing the follow control. By obtaining transmitted information from the lead vehicle about its front situation and determining the likelihood of lane boundary crossing in advance, the system can prevent unintended lane crossings by stopping the follow control when necessary, thus resolving the contradiction between maintaining safe following distance and preventing harmful unintended lane crossings.
2Productivity
If the own vehicle crosses the traffic lane boundary to follow the lead vehicle, then the follow control can maintain continuous tracking, but the occupant may be frightened by unexpected movement into the opposite lane
Solution Approach 1:
The system determines in advance whether the lead vehicle is likely to cross the traffic lane boundary by analyzing transmitted information about the lead vehicle's front situation. When the determination indicates a high likelihood of lane boundary crossing, the system stops the follow control before the own vehicle would cross into the opposite lane. This preliminary assessment prevents unexpected movements that would frighten occupants while maintaining continuous and smooth follow control during normal conditions.
3Speed
If the own vehicle follows the lead vehicle closely, then the response time to lead vehicle movements is reduced, but the own vehicle may come close to on-coming vehicles in the opposite lane
Solution Approach 1:
The system uses transmitted information from the lead vehicle about its front situation as an intermediary to determine whether the lead vehicle is likely to cross the traffic lane boundary. This intermediary information allows the system to maintain close following distance for rapid response to lead vehicle movements while simultaneously preventing dangerous proximity to on-coming vehicles by stopping follow control when the determination indicates a high likelihood of lane boundary crossing.
Data Source
AI summary
A vehicle controller includes a follow travel instructor conducting a lead vehicle follow control by auto-steering for a following of an own vehicle to follow a lead vehicle, an other vehicle information obtainer obtaining transmitted information transmitted from the lead vehicle, the transmitted information including information regarding a front situation of the lead vehicle, and an across-boundary move determiner determining whether the lead vehicle may cross a traffic lane boundary to an opposite traffic lane, based on the front situation information of the lead vehicle obtained by the other vehicle information obtainer. The follow travel instructor stops conducting the lead vehicle follow control based on a determination by the across-boundary move determiner that the lead vehicle may cross the traffic lane boundary. In such manner, an occupant of the own vehicle is prevented from becoming frightened by the auto-steering.