Route Setting Device Minimizing Driving Change Requests
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Solution Overview
Problem
Automatic driving systems on ordinary roads face frequent driving change requests due to complex traffic environments, leading to driver distrust and reduced use of automatic driving functions.
Innovation Solution
A route setting device generates multiple route candidates, calculates a change index indicating the probability of a driving change request for each route, displays these candidates with their respective change indices, receives occupant selection, and sets the route with a low change index to minimize driving change requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If automatic driving system is used on ordinary roads with complex traffic environments, then the automatic driving function can be extended beyond highways, but driving change requests occur frequently leading to driver distrust
Solution Approach 1:
The route setting device calculates a change index indicating the probability of driving change requests for each route candidate before the actual driving occurs. By performing this calculation in advance, the system can select routes with lower probabilities of requiring driver intervention, thereby preventing the problematic situation from occurring in the first place
Solution Approach 2:
The system provides feedback to the driver by displaying the change index for each route candidate, allowing the driver to understand the likelihood of driving change requests on different routes. This feedback mechanism enables informed route selection and helps manage driver expectations about automatic driving performance on ordinary roads
2Reliability
If multiple route candidates are generated and evaluated, then the best route can be selected to minimize driving change requests, but the system complexity increases
Solution Approach 1:
The system introduces a new parameter called 'change index' that quantifies the probability of driving change requests for each route candidate. By changing the route selection criterion from simple distance or time to this new parameter, the system can objectively compare routes and select the one with the lowest probability of requiring driver intervention
Solution Approach 2:
The route setting process is divided into distinct segments: generating multiple route candidates, calculating the change index for each candidate, displaying the candidates with their indices, receiving driver selection, and setting the final route. This segmentation makes the complex process more manageable and allows each component to be optimized independently
Data Source
AI summary
A route setting device includes: a route candidate generation unit that generates multiple route candidates from a current position to a destination; an index calculation unit that calculates, for each of the multiple route candidates, a change index that indicates a probability that an automatic driving system performs a driving change request when a vehicle travels along each of the multiple route candidates by using the automatic driving system; a display unit that associates the multiple candidates with the change index calculated for each of the multiple route candidates, and display the multiple associated route candidates and the associated change index; an input unit that receives a selection among the multiple route candidates by an occupant of the vehicle; and a route setting unit that sets a route among the multiple route candidates based on the selection received by the input unit.