Autonomous Vehicle Lane-Change Abort Control for Overtaking Conflicts
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Solution Overview
Problem
Existing vehicle control systems in autonomous mode lack effective mechanisms to prevent traffic conflicts during lane changes, particularly when aborting an overtaking maneuver due to converging road users from adjacent lanes.
Innovation Solution
A control system that determines the requirement for lane change, checks for abort conditions by assessing road users in adjacent lanes, and adjusts the vehicle's speed and position to maintain its original lane if an abort condition is satisfied, ensuring safety by avoiding collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the host vehicle checks for road users in the third lane before aborting an overtake maneuver, then the safety and reliability of the vehicle is improved, but the complexity of the control system increases due to additional sensing and processing requirements
Solution Approach 1:
The control system performs preliminary checks for road users in the third lane before committing to the overtake maneuver. By checking the abort condition in advance (before the vehicle enters the second lane), the system prevents unsafe maneuvers from occurring in the first place, thereby improving safety without requiring complex real-time intervention systems
Solution Approach 2:
The system continuously monitors the driving environment and provides feedback to the control logic. When road users are detected in the third lane, this feedback triggers an abort condition that prevents the overtake maneuver. This feedback mechanism ensures safety while maintaining manageable system complexity through rule-based decision logic
2Reliability
If the host vehicle performs comprehensive checks for abort conditions including third lane monitoring, then the likelihood of traffic conflicts is reduced, but the time required for decision-making and maneuver execution increases
Solution Approach 1:
The system checks for abort conditions (road users in the third lane) before the overtake maneuver begins. By performing this check in advance, the system makes a go/no-go decision early in the process, avoiding time-consuming mid-maneuver aborts and reducing overall decision-making time while maintaining high reliability
Solution Approach 2:
When the abort condition check is satisfied (no road users in third lane), the system rapidly proceeds with the overtake maneuver without unnecessary delays. The pre-check enables quick decision-making, allowing the vehicle to execute the maneuver efficiently when conditions are favorable, thus minimizing time loss
Data Source
AI summary
There is disclosed a control system and a method for a host vehicle operable in an autonomous mode. The control system comprises one or more controllers. The speed and/or path of the vehicle in the autonomous mode is appropriate to a driving context.