近年來越來越多人購買大型重機並將騎乘大型重機視為一種休閒活動,路上也隨處可見大型重機呼嘯而過的身影,然而相比106年,在110年大型重機的交通事故件數已成長將近1倍之多,短短幾年大型重機事故成長的件數竟如此之快,是何種原因導致大型重機事故這麼容易發生,又大型重機騎乘者的休閒涉入是否會影響休閒行為以及行車安全,是本研究的目的所在。本研究透過文獻探討、訪談法、行動研究等方式進行探討,研究後發現大型重機騎乘者年齡、騎車經驗會影響大型重機車種、騎乘方式的選擇,而不同的騎乘方式也會造成休閒行為與休閒效益的轉變,甚至影響到騎乘時的安全性與危險性,在經過深度訪談後,更發現大型重機騎乘者的騎乘觀念不正確、對車輛性能的不熟悉以及防禦駕駛與安全駕駛觀念不足是導致交通事故容易發生的原因。 In recent years, more and more people have purchased big-sized heavy motorcycle and regarded riding big-sized heavy motorcycle as a leisure activity. Big-sized heavy motorcycle can be seen whizzing by everywhere on the road. However, compared with 2017, the number of traffic accidents of big-sized heavy motorcycle in 2021 has nearly doubled, and the number of big-sized heavy motorcycle accidents has grown so fast in just a few years. What is the reason for big-sized heavy motorcycle accidents to occur so easily, and whether the leisure involvement of big-sized heavy motorcycle riders will affect leisure activities? Behavior and driving safety are the goals of this study. This research is conducted through literature research, interview method, action research and other methods. After the research, it is found that the age and riding experience of the riders of big-sized heavy motorcycle will affect the choice of big-sized heavy motorcycle types and riding methods, and different riding methods will also cause The changes in leisure behavior and leisure benefits even affect the safety and danger of riding. After in-depth interviews, it is found that the riders of big-sized heavy motorcycle have incorrect riding concepts, unfamiliarity with vehicle performance and defensive driving. Insufficient concept of safe driving is the reason for the easy occurrence of traffic accidents.