The Effect of Mobile Telephoning on Driving Behavior

• Main Authors: Ming-Chang Lai, 賴明昌
• Other Authors: Ｙung-Hui Lee
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/44746049956349939791

碩士 === 國立臺灣科技大學 === 工業管理系 === 90 === ABSTRACT The effect of verbal communication on driving performance was examined in a field test using an in-car data acquisition system. Twenty-one subjects were recruited for the test. They were instructed to drive through a pre-determined session of highway and city route. Responses of driving performance, driving behavioral, and heart rate were collected while subject performing the main task of driving, driving with a subtask of searching for a three-digit number, and driving with a subtask of adding two two-digit numbers. All tests were presented to subjects through a hand-free mobile phone and their feedbacks and answers were given orally. The results of the study showed：（1）there was a significant effect of telephone conversation while driving as opposed to normal driving and increased driver mental workload. While a more difficult task were performed, subjects tended to reduce the variation of driving speed, and the deviation of lane keeping to reduce the amount of mental workload.（2）Road type would affect driving behavior. The driving load on the highway was more than driving load on the city road. Driver would be more conserver on the highway and reduce the variation of drirving behavior.（3）While a dialogue task were performed on driving, subjects seems to protect their primary task from degradation due to secondary task intrusion by remaining focused on the driving task, at the expense of secondary task performance. It seems that subjects were assigning more attention, driving more conserver, and increase level of alertness, to compensate for the effect of divided attention. Keyword: driving performance, mobile phone, mental workload.