Acceptability of a Proactive Braking Intervention System by Elderly Drivers Using an Actual Vehicle

Abstract

To evaluate the acceptability by elderly drivers of a proactive braking intervention system, we conducted an experiment using an actual vehicle, which could control velocity autonomously, on a test track. After driving the experimental vehicle, the participants evaluated acceptability from various aspects by subjective questionnaires. From the results of 21 elderly drivers, we confirmed the following tendencies: partly negative evaluations for reactive factors, positive evaluations for comprehensive factors, and positive evaluations for total acceptance. In addition, from the results of the trials in which we used head-up display, we confirmed that an information sharing system could improve the evaluations of reactive factors.

Evaluation of Acceptability of Adaptive Proactive Braking Intervention System Based on Risk Map for Elderly Drivers

“…First, we implemented similar systems into a driving simulator (7) , and evaluated the acceptability through user tests. Next, we also implemented a similar system into an actual experimental vehicle (8) , and conducted the user test on a private test course. After that, we implemented Saito's system into the experimental vehicle, and conducted the field operation test on public roads (9) .…”

Comparison of Proactive Braking Intervention System Acceptability via Field Operation Tests in Different Regions

“…The second questionnaires were existing ones which evaluated the characteristics of the participants. To be more precise, we used TMT-J [20], which is a Japanese version of the Trail Making Test [21], for evaluating the total ability regarding perception and recognition, DSQ [22] for evaluating the driving style via 18 questions, and WSQ [23] for evaluating the workload sensitivity via 38 questions. DSQ and WSQ were tested before Day 1 as a preliminary questionnaire.…”