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- W72183779 abstract "According to the traffic accident report by the National Police Agency, more than 150,000 persons are injured in bicycle-related traffic accidents in 2009 in Japan. In order to reduce bicycle-related traffic accidents, collecting cyclists' actual behavior data especially safety-related behavior data under various traffic conditions is essential. In this paper, we propose (1) a method for continuously measuring and analyzing cyclists' turning-head behavior (including both safety visual search behavior and look-away behavior) using wearable sensors, (2) an automated method to identify whether the measured turning-head behavior is safety visual search behavior or look-away behavior requiring no prior information, and (3) a method for automatic creation of cyclists' safety behavior map showing traffic spots where many cyclists perform safety visual search behavior. Our method use small wireless three-axis gyro sensors to measure cyclists' head motion. Since gyro sensors and a PDA are both small, wireless and running on battery power, our method can easily adapt to various kinds of situations. By applying independent component analysis (ICA) to reduce bicycle-caused noise, our method allows to detect cyclists' turning-head behavior with precision of 90.5% and recall of 91.8%. In addition, by focusing on spatial density of turning-head behavior among cyclists, identification ratio of visual search behavior achieved 18% improvement without using any prior information. Furthermore, safety behavior map created from 36 junior high school students’ data showed the fact that almost 60% of all subjects never perform visual search behavior even when entering blind intersections including accident prone area." @default.
- W72183779 created "2016-06-24" @default.
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- W72183779 date "2011-01-01" @default.
- W72183779 modified "2023-09-23" @default.
- W72183779 title "Measuring Cyclists' Behavior Using Wearable Sensors for Automatic Creation of Safety Behavior Map" @default.
- W72183779 hasPublicationYear "2011" @default.
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