Intersection Driving Assistance Using Auxiliary Road Marking Availability
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Solution Overview
Problem
Existing methods for generating travel paths within intersections using GPS positioning may be inaccurate, and those relying on auxiliary road markings do not account for vehicle size and oncoming traffic, leading to improper utilization of these markings.
Innovation Solution
An on-board device that acquires and determines the availability of auxiliary road markings within an intersection, using this information to decide whether to implement driving assistance, and transmits this data to a server for map data updates, ensuring proper use based on vehicle type and traffic conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS positioning is used to generate travel paths within intersections, then positioning information can be obtained, but positioning accuracy is insufficient leading to improper travel path generation
Solution Approach 1:
The patent combines GPS positioning information with auxiliary road marking information to generate travel paths. By merging these two data sources, the system overcomes the limitation of GPS alone, achieving both the positioning capability and the accuracy needed for reliable travel path generation within intersections.
Solution Approach 2:
The patent introduces auxiliary road markings as an intermediary element that mediates between GPS positioning and travel path generation. The auxiliary markings serve as a reference framework that enhances the precision of GPS data, enabling accurate travel path generation even when GPS positioning accuracy is insufficient.
2Ease of operation
If auxiliary road markings are used to generate travel paths, then travel path guidance can be provided, but vehicle size and traffic conditions are not considered leading to improper utilization
Solution Approach 1:
The patent makes the utilization of auxiliary road markings dynamic by adjusting their use based on vehicle size and traffic conditions. The system dynamically determines whether and how to apply auxiliary marking guidance, switching between different guidance strategies to adapt to varying vehicle types and traffic situations, thereby achieving both ease of operation and adaptability.
3Ease of operation
If auxiliary road markings are always utilized for driving assistance, then guidance within intersections can be provided, but improper utilization occurs when markings are not suitable for certain vehicle types or traffic conditions
Solution Approach 1:
The patent applies local quality by making the utilization of auxiliary road markings location-specific and condition-specific. Different sections of auxiliary markings are utilized differently based on local conditions such as vehicle type and traffic situation. The system selectively applies guidance only where and when it is appropriate, ensuring both ease of operation and reliability.
Data Source
AI summary
An on-board device for a vehicle, includes a map data storage unit configured to store map data including availability information that indicates availability of an auxiliary road marking within an intersection, an availability information acquisition unit configured to acquire the availability information; an availability determination unit configured to determine the availability of the auxiliary road marking within the intersection, indicated by the availability information and a driving assistance implementation unit configured to determine whether to implement driving assistance using the auxiliary road marking based on a result of determination of the availability of the auxiliary road marking within the intersection.