Intersection Speed Guidance Adjusted for Preceding Vehicle Approach
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Solution Overview
Problem
Existing driving assistance apparatuses do not provide adequate information to drivers when a preceding vehicle is present, which can lead to decreased traffic smoothing and safety.
Innovation Solution
A driving assistance apparatus that includes a display part, a detection part, and an electronic control unit. The apparatus detects the degree of approach to a preceding vehicle and acquires traffic light information, using this data to derive recommended driving instructions and display information on a recommended vehicle speed to the driver, adjusting the maximum recommended speed based on the detected degree of approach.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the apparatus provides recommended vehicle speed information to drivers, then traffic safety and smoothing are improved, but the device complexity increases due to additional detection and control components
Solution Approach 1:
The display part serves multiple functions: it displays recommended vehicle speed information, notifies drivers of traffic light status, and provides guidance on optimal acceleration/deceleration timing. By making the display part multi-functional, the system improves traffic safety without adding separate notification devices, thereby limiting the increase in device complexity.
Solution Approach 2:
The electronic control unit acts as an intermediary that processes detection data from the detection part, calculates recommended vehicle speeds, and controls the display part accordingly. This intermediary component integrates the detection and display functions, improving system coordination and safety while avoiding the need for direct complex interactions between detection sensors and display elements.
2Productivity
If the apparatus adjusts maximum recommended speed based on degree of approach to preceding vehicle, then traffic smoothing is improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The detection part proactively detects the degree of approach to the preceding vehicle in advance, and the electronic control unit pre-calculates the appropriate maximum recommended speed based on this detection. This preliminary action allows the system to provide timely speed recommendations that improve traffic smoothing, as the recommended speed is prepared before the driver needs to make deceleration decisions.
Solution Approach 2:
The system changes the recommended vehicle speed parameter dynamically based on the detected degree of approach to the preceding vehicle. When the degree of approach exceeds a threshold, the maximum recommended speed is adjusted downward. This parameter change approach simplifies the measurement requirement to a single degree-of-approach metric while achieving complex traffic smoothing objectives.
Data Source
AI summary
A driving assistance apparatus including a display part, a detection part detecting a degree of approach from a subject vehicle to a preceding vehicle and a microprocessor. The microprocessor is configured to perform acquiring traffic light information including switching information on a traffic light and position information on a position of the subject vehicle with respect to the traffic light, deriving a recommended driving for the driver based on the traffic light information and the position information, and controlling the display part so as to notify the driver of information on a recommended vehicle speed included in the recommended driving, and further perform the controlling including controlling the display part so as to change and display information on a maximum value of the recommended vehicle speed included in the recommended driving in accordance with the degree of approach.