Navigation System Traffic Condition Index Optimization
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Solution Overview
Problem
Managing traffic conditions in areas with a large number of vehicles, where overlapping routes can lead to congestion, making it difficult to improve overall traffic flow even if vehicles take different routes.
Innovation Solution
A navigation system that includes a traffic condition calculation unit, a guidance route determination unit, and a guidance route providing unit, which calculates and provides routes with the highest degree of non-congestion based on area traffic condition index values, avoiding bottleneck road segments and adapting to changing traffic conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If vehicles are guided along different routes to avoid congestion, then individual vehicle travel time is improved, but overall traffic condition in the target area deteriorates due to route overlap
Solution Approach 1:
Instead of minimizing individual travel time as the primary objective, the system inverts the approach by maximizing the overall traffic condition index value as the primary objective. The guidance route determination unit calculates the overall traffic condition index value for multiple routes and selects the route with the highest value, which may result in longer individual travel times but significantly improves overall traffic flow and reduces congestion in the target area.
Solution Approach 2:
The system changes the optimization parameter from individual vehicle travel time to overall traffic condition index value. By using the traffic condition evaluation unit to calculate and compare overall traffic condition index values for different routes, the system shifts the optimization focus to achieve better collective traffic conditions rather than individual efficiency.
2Productivity
If the server manages current positions and destinations of all vehicles in a centralized manner, then route optimization is improved, but system complexity increases
Solution Approach 1:
The system segments the route optimization function into multiple independent components: the traffic condition evaluation unit that calculates overall traffic condition index values, the guidance route determination unit that selects optimal routes based on these values, and the guidance information provision unit that delivers routes to vehicles. This segmentation allows centralized optimization while maintaining modular, manageable complexity.
Solution Approach 2:
The overall traffic condition index value acts as an intermediary metric that simplifies the complex relationship between multiple vehicles and routes. Instead of managing individual vehicle interactions directly, the system uses this aggregated index value as a mediator to evaluate and compare routes, reducing the complexity of centralized management while maintaining optimization effectiveness.
Data Source
AI summary
A navigation system includes: a traffic condition calculation unit (222) that calculates an evaluation value indicating a traffic condition of each road segment included in a target area; a guidance route determination unit (223) that determines a route in which a degree of non-congestion based on the traffic condition evaluation value of a road segment included in a route to a destination of each vehicle is the highest as a guidance route on the basis of the traffic condition evaluation value calculated by the traffic condition calculation unit and the destination of each vehicle; and a guidance route providing unit (224) that provides the guidance routes determined by the guidance route determination unit to a driver of the corresponding vehicle.