在近幾年裡，台灣都市地區的交通密度、開車的限制和花費逐漸增加，導致使用兩輪交通工具的人數逐漸增加。根據交通部統計處資料顯示，民國95年涉入A2類車禍中的機車數每萬輛機車有1,078輛，而在國內目前所關切之酒醉駕駛方面，從民國93至95年A1類交通事故件數中酒醉(後)駕駛肇事件數所占的比例越來越高，而取締酒後駕駛案件數更是居高不下，顯示國內機車車禍問題確實相當嚴重。 本研究以固定式機車模擬器配合虛擬道路場景，將無法在實際道路上進行的實驗的駕車情境，於安全環境下進行實驗，探討機車騎士對於道路上突發事件的煞車反應時間，並針對未飲酒、呼氣酒精濃度0.15 mg/l和呼氣酒精濃度0.25 mg/l的情況下，探討酒精對機車騎士的煞車反應時間之影響。 結果顯示，煞車反應時間會受到酒精、性別、煞車預備動作、左右手和單手或是雙手操作煞車的影響。而在呼氣酒精濃度為0.15mg/l和0.25mg/l的情況下，受測者的剎車反應時間皆比在未飲酒的情況下高，也就是說喝酒會讓受測者對於突發事件的剎車反應時間變長，增加可能發生事故的機率。 In recent years, the urban traffic density and the rising constraints and costs supported by car drivers caused an increase of the use of two wheeled vehicles in Taiwan. Base on the department of statistics of MOTC reported in 2006, there are 1078 of every ten thousand motorcycles in A2 traffic accident. And after riding while intoxicated, the amount of motorcycle accidents in A1 traffic accident get more and more from 2004 to 2006. The data show that the motorcycle accident problem is quite serious. The study integrates the static motorcycle riding simulator and technologies of virtual reality (VR) to develop a VR system for measuring brake reaction time of motorcycle riders. The VR system that can simulate the actual riding scene lets motorcycle rider experiment in a safety condition. The study examined the estimation of influences on riding while intoxicated (breath alcohol concentration (BrAC) 0.15 mg/l and 0.25 mg/l) upon motorcycle riders, a test was taken to examine the brake reaction times of the sudden accident on the road. The results showed that alcohol, sex, ready-to-brake, braked by using single-handed or both hand and braked by using the left hand or right hand could influence brake reaction times, and higher BrAC was found to be correlated with longer brake reaction times.
