酒駕為死亡交通事故的首要肇因，酒駕防制是臺灣交通安全的重要課題。本研究以內政部警政署2003-2009 年交通事故資料進行分析，以了解酒駕事故特性。事故資料分析結果發現，酒駕肇事的事故當事者中，主要族群為機車(59%)及小客車(31%)駕駛者。許多國家常以小客車駕駛者為主要的酒駕防制對象，臺灣也需要注意機車駕駛者的酒駕問題。事故類型方面，無論是機車或小客車駕駛者，酒駕自撞事故比率均高於未飲酒者。酒駕機車駕駛者中，26%為自撞事故；非酒駕機車駕駛者中，5%為自撞事故。酒駕小客車駕駛者中，17%為自撞事故；非酒駕小客車駕駛者中，2%為自撞事故。在車與車碰撞的事故類型中，酒駕駕駛者之對撞與追撞比率均高於未酒駕駛者，其原因可能是飲酒會影響駕駛者的車輛操控能力，也會降低察覺路況的狀況知覺能力。本研究收集並彙整國內外已實施的酒駕防制策略，提供國內相關單位提出酒駕防制策略之參考。

Drunk driving is the main cause of fatal accidents. The prevention of drunk driving is an important traffic safety issue in Taiwan. This study analyzed the crash dataset built by the National Police Agency, Ministry of the Interior from 2003 through to 2009 to determine the characteristics of drunk driving accidents. The results indicated that drunk drivers were mainly motorcyclists (59%) and small passenger vehicle drivers (31%). In many countries, drunk driving prevention efforts have focused mainly on car drivers, but drunk driving prevention efforts must also consider motorcyclists in Taiwan. Motorcyclists and small passenger vehicle drivers under the influence were more implicated in more single-vehicle accidents than sober motorcyclists and small passenger vehicle drivers were: of the accidents involving motorcyclists under the influence, 26% were single-vehicle accidents and 5% of the accidents involving sober motorcyclists were single-vehicle accidents; of the accidents involving small passenger vehicle drivers under the influence, 17% were single vehicle accidents, and 2% of the accidents involving sober drivers were single vehicle accidents. Motorcyclists and small passenger vehicle drivers under the influence were more implicated in head-on and rear-end accidents than sober motorcyclists and small passenger vehicle drivers were. This may be because drunk driving affects motorcyclists’ and drivers’ ability to control their vehicles, and decreases situational awareness of road and traffic conditions. In this study, the drunk driving prevention strategies implemented in Taiwan and other countries are summarized to assist the government in determining effective prevention strategies to solve the drunk driving problem.