Driving Support System Dynamic Entry Difficulty Levels
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Solution Overview
Problem
Conventional driving support systems inaccurately assess the difficulty of entering a facility based solely on road conditions, failing to consider actual vehicle entry data and traffic volume changes, which can lead to inappropriate route guidance for drivers with varying skill levels.
Innovation Solution
A driving support system that collects and analyzes probe information from vehicles to set entry difficulty levels for facilities dynamically, considering the percentage of right-turn entries and traffic conditions, and adjusts guidance accordingly to match the driver's skill level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If entry difficulty is assessed based solely on road conditions (number of lanes, traffic volume), then the assessment can be performed using static road data, but the accuracy of entry difficulty determination deteriorates because actual vehicle entry behavior and real-time traffic conditions are not considered
Solution Approach 1:
The system collects probe information from actual vehicle entries into facilities and uses this feedback data to dynamically adjust and refine entry difficulty level determinations. By continuously monitoring real entry behavior and comparing it with predicted difficulty based on road conditions, the system improves measurement accuracy through iterative feedback loops.
Solution Approach 2:
The entry difficulty levels are made dynamic rather than static. The system updates difficulty levels in real-time based on current traffic conditions, time of day, and actual vehicle entry patterns. This allows the assessment to adapt to changing road conditions while maintaining accurate measurement of actual entry difficulty.
2Adaptability or versatility
If dynamic entry difficulty levels are set based on actual vehicle entry data and real-time traffic conditions, then the accuracy and applicability of route guidance improves, but the system complexity and data processing requirements increase
Solution Approach 1:
The system uses probe information automatically collected from vehicles during normal operation to self-adjust and refine entry difficulty assessments. The data is gathered as a byproduct of routine navigation operations, eliminating the need for separate manual data collection systems while still enabling dynamic adaptation.
Solution Approach 2:
The system changes the parameters used for entry difficulty assessment from static road characteristics to dynamic parameters including real-time traffic volume, time of day, day of week, and actual vehicle entry behavior. This allows the system to adapt to varying conditions while using standardized data processing techniques.
3Ease of operation
If route guidance is provided without considering actual entry difficulty and driver skill level, then the system remains simple and fast, but the suitability of guidance for different drivers deteriorates
Solution Approach 1:
The system pre-calculates and stores entry difficulty levels for various facilities based on historical probe information and road conditions. This preliminary assessment allows the route guidance system to quickly retrieve and apply difficulty levels during route calculation without performing complex real-time analysis, thus maintaining speed while improving suitability.
Data Source
AI summary
When a vehicle enters a facility off a road on which the vehicle is traveling, information pertaining to an entry direction into the facility is sent to a probe center as probe information, and a current driving level of the host vehicle is identified. Meanwhile, the probe center that received the probe information calculates a right-turn entry percentage for facilities based upon the received probe information, and sets an entry difficulty level of the facilities based upon the calculated right-turn entry percentage. A vehicle to which information pertaining to the entry difficulty level of a set facility was distributed from the probe center is structured so as to perform driving support based upon the information pertaining to the entry difficulty level of the facility.