「變換多車道」對於許多駕駛人來說是項艱難的技巧，因為需要考量到非常多且複雜的因素，包括車速、車流與距離等，而導致變換延遲時間增長，誘發許多不安全的狀況。若在車速極快、車流複雜、距離過短的情況下，變換多車道行為可能會形成交織車流的運作，駕駛人容易因為視野死角或判斷失誤而導致意外發生，此情況常發生於高速公路的交織路段上，如交流道轉換路段。
本研究以小汽車駕駛模擬系統呈現高速公路系統交流道之交織路段的場景，其中包含單向三車道的轉換路段、三種「變換限制距離」的路段長度及三項車流「交織流量比率」，時間設定為接近下午尖峰時刻，車速較高且交通量漸漸提升。招募18個測試者來實驗，並採用9個因子設計組合而成的模擬場景，以達到有效153個樣本數，並讓受測者在某些限制條件下，以車內警示系統輔助駕駛人告知訊息方式變換多車道，接著以統計檢定方法分析其行為數據，評估影響駕駛人使用此系統於高速公路交織路段上變換多車道的效果。結果顯示400公尺的道路設計水準與維持<25%的交織流量比率能提供更安全的經濟效率，且車內警示系統能有效提醒駕駛人，可改善駕駛人的操作技能，減少其變換多車道的延遲時間，提升駕駛人行駛於道路上的交通安全，避免造成意外事故而致傷亡。
此研究結果未來可廣泛應用於先進的駕駛輔助系統，即時告知駕駛人在交織路段上變換多車道的訊息，降低決策的時間及失誤性。將來可利用車載資通訊技術傳輸訊息，再透過資訊加值處理方式，適時、適地、適切地通報給駕駛人，並賦予道路安全的執法單位更多通報管道，以利規劃具體的相關法規及維護道路行車安全。

The discussion of the research is near-crash event on Freeway weaving sections. If there are high speed, complicated flow and short distance, it will become to crash easily take place where interchanges. Moreover, to verify In-vehicle Warning System is useful to assists driver changing multi-lanes. The approach uses Driving Simulation System to construct weaving section on freeway. The scene includes three kinds of change limited distance and three kinds of weaving volume ratio and two groups of In-vehicle Warning System. We recruit 18 examiners and employ 9 factors of interaction reach the experimental samples. Then we will adopt statistical method not only analyzing the data but also evaluating affection on driver’s behavior and reaction. Results are 400 m of limited distance and <25% of weaving volume ratio are safer than the other level, as well as In-vehicle Warning System will enhance double performance than none. This outcome of the research is able to apply on advanced driver assistance system widely. To change limited distance and weaving volume ratio will promote the traffic safety and avoid accident happening on freeway. Finally, the conclusions may sustain the policy when enforcement department implement and augment driving safety on freeway weaving section.

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