Exit Lane-Change Control Using Road Gradient Prediction
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Solution Overview
Problem
Existing driver assistance systems struggle in high traffic conditions on multi-lane roads, particularly when changing lanes from a first lane to an exit lane with steep gradients, where vehicles in the adjacent lane often travel at low speeds and have small gaps, leading to unreliable lane change maneuvers.
Innovation Solution
A driver assistance system that adjusts the vehicle's speed and initiates lane change maneuvers based on the road gradient, traffic density, and presence of trucks, using environmental sensors and digital map data to ensure timely gap detection and safe lane changes, with adaptive speed profiles and notifications tailored to the driver's behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle continues straight at constant speed based on usual driving behavior, then the vehicle maintains stable operation, but the vehicle fails to adapt to gradient changes at exit regions causing unsafe maneuvering
Solution Approach 1:
The system performs preliminary detection of gradient information at exit regions before the vehicle reaches the problematic area. By identifying gradient changes in advance and calculating appropriate lane change timing, the system prepares the vehicle for safe maneuvering before entering the gradient region, thus improving safety without requiring complex real-time intervention
2Adaptability or versatility
If the vehicle performs lane changes to avoid gradient regions, then the vehicle can adapt to road conditions, but unnecessary lane changes may occur increasing system complexity and potential hazards
Solution Approach 1:
The system changes the parameter of lane change timing by calculating optimal moments based on gradient detection. Instead of lane changing at fixed intervals or upon immediate gradient detection, the system adjusts the timing parameter to perform lane changes only when gradient conditions and traffic conditions are favorable, thus improving adaptability while minimizing hazards
3Reliability
If the system detects gradient information and calculates lane change timing, then safe maneuvering is achieved, but the detection and calculation process increases system complexity
Solution Approach 1:
The gradient detection system is designed to serve multiple functions: detecting gradient information, determining exit regions, calculating lane change timing, and providing warning signals. By making the detection system multi-functional, the patent reduces the need for separate dedicated components for each function, thus improving safety while controlling overall system complexity
Data Source
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AI summary
The invention relates to a method for maneuvering a vehicle (1) on a multi-lane road (11), comprising the steps of: receiving a driving command to maneuver the vehicle (1) from a first lane (13) of the road (11) to an exit (15) of the road (11) via a second lane (12) of the road (11); preparing for a lane-change maneuver from the first lane (13) to the second lane (12), wherein, for the preparation for the lane-change maneuver, the speed of the vehicle (1) is adjusted; determining a gradient of the road in a region of the exit (15); and adjusting the preparation for the lane-change maneuver in accordance with the determined gradient.