外送平臺自2012年引入臺灣並快速普及，尤其在COVID-19疫情期間，外送需求急劇增加，至今提供外送服務已成為餐飲業的新常態。這個環境下臺灣的外送員人數在近三年間已經增加了十萬人次，使得道路上的外送機車數量遽增。外送機車駕駛人的高風險違規行為與道路安全問題成為廣泛關注的議題，其風險駕駛模式也已經在許多國內外研究中被討論，外送機車的違規行為可能增加交通事故的風險。而臺灣各縣市中臺南市的機車事故數在近年呈現明顯上升趨勢，且死傷人數也居高不下，外送平臺的引入也可能是臺南市機車事故上升的一個潛在原因。故本研究以臺南市作為研究地區提出了一個框架探討外送平臺的引入對機車事故的影響，將引入外送平臺的行政區設定為處理組; 與未引入外送平臺的行政區設定為控制組。先以結構性變動 (Structural Breaks Test) 分析處理組機車事故之時間序列資料的突升時間點出現在2018年1月，了解外送平臺引入後對機車事故的影響時間延滯效應情況。再透過差異中的差異法 (Difference-In-Difference) 比較2018年1月前後處理組及控制組，引入外送平臺的影響效果對機車事故總數增加是否顯著，研究結果顯示2018年前後六年處理組相較控制組機車事故多上升了51%，表示外送平臺的引入對機車事故總數有增加效果，建議臺南市交通局與警察局當局對交通事故紀錄加入明確註記是否涉入外送活動，以利對於外送活動的交通安全有更全面的監管。並建議未來機車事故因子相關的研究將「外送服務與否」作為對交通事故的影響因子，減少未知的解釋變數，以提升研究對真實現況的解釋力。

Since the introduction of delivery platforms in Taiwan in 2012, their popularity has rapidly increased, especially during the COVID-19 pandemic when the demand for delivery services surged. This has led to a significant rise in the number of delivery motorcycles on the roads, with the number of delivery personnel increasing by 100,000 over the past three years. The high-risk behaviors of delivery motorcycle drivers have raised widespread safety concerns, with studies both domestically and internationally highlighting the potential increase in traffic accidents due to these behaviors. In Tainan City, the number of motorcycle accidents and the associated fatalities and injuries have been on the rise, potentially linked to the introduction of delivery platforms. This study examines the impact of delivery platforms on motorcycle accidents in Tainan by comparing districts with and without delivery platform services.

Our research reveals that the introduction of delivery platforms corresponds with a significant increase in motorcycle accidents. The methodology involves the Structural Breaks Test to identify critical shifts in accident trends and the Difference-In-Difference method to analyze the impact over time. The results indicate a marked increase in accidents in areas serviced by delivery platforms, suggesting a direct correlation. This study highlights the need for enhanced regulatory measures and suggests further research to fully understand the implications of delivery platforms on traffic safety.

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