Automated Driving Control for Low-Speed Section Adaptation
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Solution Overview
Problem
Current vehicle control systems for automated driving do not effectively consider traffic flow when selecting driving modes based on vehicle speed, limiting the adaptability of automated driving behaviors.
Innovation Solution
A vehicle control system that acquires information on the speed of other vehicles in the travel direction, determines the presence of low-speed sections, and performs predetermined controls such as outputting information or changing lanes before reaching these sections to enhance adaptability and ensure smooth navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If automated driving mode is selected based only on vehicle speed without considering traffic flow, then the control system is simple, but the adaptability of automated driving is limited
Solution Approach 1:
The system performs preliminary detection of low-speed sections ahead of the vehicle and issues warnings or executes lane changes before the vehicle actually enters the low-speed section. This advance preparation allows the automated driving system to adapt to traffic conditions proactively rather than reactively, improving adaptability while maintaining manageable complexity through structured prediction and preparation phases
Solution Approach 2:
The system dynamically adjusts automated driving behavior based on detected traffic conditions. When a low-speed section is detected, the system transitions from normal automated driving to alternative behaviors (warning output or lane change). This dynamic adaptation allows the system to respond flexibly to varying traffic conditions without requiring complete redesign of the control architecture
2Reliability
If the vehicle does not perform predetermined control before reaching low speed section, then the control logic is simpler, but the vehicle may fail to smoothly enter branch roads
Solution Approach 1:
The system detects low-speed sections in advance and performs predetermined control actions (outputting warnings or executing lane changes) before the vehicle reaches the low-speed section. This preliminary action ensures that the vehicle is properly positioned and notified before entering conditions that could prevent smooth branch road entry, thereby improving reliability without requiring complex real-time decision-making at the critical moment
3Adaptability or versatility
If the vehicle changes lanes before reaching low speed section, then the adaptability is improved, but the risk of lane change conflicts increases
Solution Approach 1:
The system performs lane changes in advance before the vehicle reaches the low-speed section, rather than attempting lane changes at the critical moment. This timing strategy allows the vehicle to complete lane changes when there is more time and space, reducing the risk of conflicts with other vehicles while still achieving the adaptability benefit of responding to detected traffic conditions
Data Source
AI summary
A vehicle control system includes an acquirer that acquires information that allows recognition of a speed of another vehicle in a travel direction of an own vehicle, a determiner that determines whether or not a low speed section whose travel speed is equal to or less than a first predetermined speed is present in the travel direction of the own vehicle on the basis of the information acquired by the acquirer, and a controller that is able to perform an automated driving mode which is executed at a second predetermined speed or less and that performs predetermined control before the own vehicle reaches the low speed section that has been determined as being present by the determiner.