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2020年11月13日 (金)

Evaluation of automated driving ethics by driving simulator (3)

We found that is is possible to consider the program which expresses the ethics. ​However, initial program values and constants must be collected experimentally. The best way to experiment is to collect driving data in the driving simulator with the help of a person with a typical sense of ethics. ​In this method, drivers are asked to make a decision on whether to go straight or change lanes by causing a truck problem on the driving simulator.

​It's a good idea to experiment with two different patterns, one for manual driving with broken brakes, and the other for the automated driving vehicle. ​Also, independent of the driving simulator experiment, it is necessary to take a questionnaire just for judging the situation like the moral machine and check whether it is the same tendency as the result of the driving simulator. ​This is because there is no time to think carefully in actual situations, and the presence or absence of a difference between immediate judgment and thoughtful judgment is also important data.

​Also, in the case of a learning type programu, learning should be started not only in extreme situations such as the trolley problem, but also in normal use. ​Therefore, from the status of compliance with the normal traffic rules of one's own vehicle to the status of travel of another vehicle, the status of the environment in which the vehicle is normally traveling is also used for parameter learning of the program.

​Level 5 automated driving vehicles don't have steering or pedals because they aren't supposed to be driven by drivers. ​This means that it is not possible to learn the driver's ethics during normal driving. For this reason, it would be better to start from the point where the Level 1 driver actively controls the vehicle, learn the ethics during normal driving in the Level 1 usage situation, and gradually raise the level of automated driving, instead of suddenly changing to Level 5. ​Of course, there's also the idea that a level 5 automated driving vehicle will inherit the values it learned when it was developed. ​However, ethics can vary slightly depending on the user and the area in which they use it, so it is better to have a mechanism that allows them to always learn. ​Therefore, the driving simulator is utilized.

​Thus, the automated driving vehicle that is not controlled by the driver should have a mechanism to monitor the ethical satisfaction of its occupants during normal use. ​This means that the system is needed to detect changes in physiological indicators of occupants without contact.

 

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