Lane-Level Map Display for Visualizing Traffic by Lane
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Solution Overview
Problem
Navigation devices display traffic congestion information for multiple lanes as a single line, making it impossible to visualize traffic information for each lane separately, requiring users to select lanes from a list to view specific traffic data.
Innovation Solution
A map display device that acquires traffic information for each lane and creates a road map image representing roads by lane using lane link data, allowing the display of traffic information directly on the corresponding lane in the map image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If road map data uses link data for each road (not each lane), then the data structure is simpler and easier to manage, but traffic information for multiple lanes cannot be displayed separately and must be shown as a single line
Solution Approach 1:
The patent segments the road representation from link-level to lane-level by introducing lane link data that divides each road into multiple lanes. This segmentation allows traffic information to be displayed separately for each lane while maintaining the underlying road structure, resolving the contradiction between data simplicity and information completeness.
2Ease of operation
If traffic information is displayed on a single line representing the road, then the display is simple, but users cannot identify traffic conditions of specific lanes and must manually select lanes from a list
Solution Approach 1:
The patent adds a lane dimension to the traditional road display by representing each lane as a separate visual element on the map. This dimensional expansion allows users to see traffic information for multiple lanes simultaneously without complex selections, maintaining display simplicity while providing comprehensive lane-specific information.
3Area of stationary object
If users must select lanes from a list to view traffic information, then the system uses less display space, but user operation becomes more complex and time-consuming
Solution Approach 1:
The patent merges the lane selection function with the map display itself by directly showing traffic information for multiple lanes on the road map. This integration eliminates the need for separate list selections, allowing users to view all necessary lane information within the existing map area without additional operational steps.
Data Source
AI summary
An object of the present invention is to display a list of traffic information of a plurality of lanes. A map display device of the present invention includes a traffic information acquisition unit that acquires traffic information for a road including a plurality of lanes for each lane, and a display control unit that creates a road map image that represents a road for each lane using map data having lane link data, and causes a display device mounted on a vehicle to display thereof, in which the display control unit superimposes the traffic information on the corresponding lane in the road map image.