Cruise Control Speed Adjustment for Intersection Turning Lanes
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Solution Overview
Problem
Existing cruise control technologies fail to adequately manage vehicle speed when turning at intersections, leading to increased driver anxiety and a higher risk of collisions due to inappropriate acceleration.
Innovation Solution
A driver assistance method and system that determines the vehicle's driving state in cruise control, recognizes signs indicating lane direction and intersection stop lines, confirms the driver's intention to turn, and controls the vehicle's speed to a safe, predetermined level based on the intersection's curvature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the vehicle accelerates when the target vehicle disappears during a turn, then the cruise control maintains its set speed, but driver anxiety increases and collision risk rises
Solution Approach 1:
The system performs preliminary detection of intersections and turn situations before the target vehicle disappears. When an intersection is detected ahead and the vehicle is in a turning lane, the system proactively adjusts speed control parameters to prevent excessive acceleration, rather than reacting after the problem occurs
Solution Approach 2:
The system continuously monitors multiple parameters including lane position, turn signal status, and intersection detection results to provide feedback to the speed controller. This closed-loop feedback mechanism adjusts acceleration rates dynamically based on the detected turning situation, preventing the target vehicle disappearance issue from causing unsafe acceleration
2Productivity
If the cruise control set speed is significantly higher than current vehicle speed, then the vehicle can reach the set speed faster, but acceleration magnitude increases causing collision risk during turns
Solution Approach 1:
The system dynamically adjusts the acceleration rate based on detected driving conditions. When a turning situation is detected at an intersection, the system modifies the acceleration profile to be more conservative, allowing the vehicle to reach the set speed safely without excessive acceleration that could cause collision
Solution Approach 2:
The system changes the acceleration parameter dynamically based on the detected situation. Normal acceleration rates are applied during straight driving, but when an intersection and turn lane are detected, the acceleration parameter is adjusted to a safer, lower value to prevent collision while still progressing toward the set speed
3Ease of operation
If the vehicle follows the target vehicle closely, then the cruise control maintains small interval spacing, but the driver's anxiety increases when the target vehicle turns and disappears
Solution Approach 1:
The system detects intersections and turn lanes in advance before the target vehicle disappears. This preliminary detection allows the system to prepare appropriate speed control adjustments, maintaining smooth cruise control operation while preventing the anxiety caused by sudden target loss
Data Source
AI summary
A driver assistance method and driver assistance system are provided. The driver assistance method may comprise: determining a driving state of a vehicle in a cruise control; recognizing a sign indicating a driving direction of a lane in which the vehicle is driving and a stop line at an intersection; confirming an intention of a driver to drive in a same direction as the driving direction of the lane indicated by the sign; and controlling a speed of the vehicle to be a predetermined safe speed if it is confirmed that the driver intends to drive in the same direction as the driving direction of the lane indicated by the sign.