Navigation System Route Setting with Traffic Control Validation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing navigation systems allow users to set routes by tracing roads on a display, but fail to account for traffic controls, such as one-way streets, which can result in impractical or impossible routes being set.
Innovation Solution
A navigation system that includes a storage unit for map data managed with links, a road map display unit, and a route setting unit that detects and differentiates between traversable and non-traversable links based on traffic control data, preventing the inclusion of non-enterable roads in the route and alerting users to potential errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user sets a route by freely tracing roads on the display screen, then the ease of operation is improved, but the reliability of the route decreases due to traffic control violations
Solution Approach 1:
The system performs preliminary analysis of traffic control data before the user completes route setting. When the user traces a road, the system proactively checks whether the road can be entered from the current position considering one-way streets and traffic controls, and provides advance guidance or warnings before the route is finalized, preventing invalid routes from being set.
Solution Approach 2:
The system provides real-time feedback to the user during route setting by displaying whether each traced road can be legally entered. When the user traces a road that cannot be entered due to traffic control, the system immediately notifies the user and suggests alternative routes, allowing the user to correct the tracing before finalizing the route.
2Loss of information
If the system displays all roads on the map, then the completeness of information is improved, but the user may be confused by non-enterable roads
Solution Approach 1:
The system applies different display qualities to different roads based on their enterability status. Roads that can be entered are displayed with normal styling, while roads that cannot be entered due to traffic control are displayed with distinct visual characteristics such as different colors, patterns, or transparency, allowing users to quickly distinguish between traversable and non-traversable roads.
3Reliability
If the system prevents setting non-enterable roads, then the route reliability is improved, but the ease of operation decreases due to additional constraints
Solution Approach 1:
The system automatically detects and prevents invalid route segments without requiring active user intervention. When the user traces a road that cannot be entered, the system autonomously identifies the error, notifies the user, and either automatically suggests corrections or prevents the invalid selection, reducing the cognitive burden on the user while maintaining route validity.
Data Source
AI summary
According to the 1st aspect of the invention, a navigation system comprises: a storage unit that stores map data managed with links representing smallest road units; a road map display unit that displays a road map based upon the map data; a depressed position detection unit that detects a depressed position on the road map on display; and a route setting unit that extracts a corresponding link corresponding to the depressed position and sets the extracted corresponding link as a route to a destination based upon the map data, and the route setting unit extracts a link adjacent to the corresponding link and makes a decision as to whether or not the adjacent link can be entered from the corresponding link based upon the map data.