目前各國政府與民間團體開始積極地鼓勵民眾加入節能減碳的行列，提倡使用自行車等綠色運具。然而，各縣市政府雖大力推行自行車作為通學、通勤之運具，對於自行車道路網建置卻大都不完善、不連續且安全低，以致於自行車之使用率不如預期。因此，本研究利用網路流動技巧與數學規劃方法，同時考量需求量、旅行時間與安全性等相關資訊及限制，發展一規劃輔助工具，以協助規劃者在現有道路系統下，進行初步通勤型自行車道路網的設置。為評估模式之績效，本研究參考國內一城市的實務資料，進行範例測試，測試結果良好，應可為相關管理單位的規劃參考。

Recently governments and social organizations have begun to actively encourage people to participate in energy-saving and carbon reduction, while promoting the use of bicycles and other green transportation. However, as the governments promote of bicycles to be the transportation mode for commuters and students, bikeway networks were not well constructed, nor were their continuity and security ensured. As a result, bicycle utilization has not met expectation. Thus, in this study we employ network flow techniques and mathematical programming methods, considering the information and constraints of demand, travel time and safety, to develop a planning tool that can assist the planner in constructing preliminary commuter bikeway networks under the existing roadway system. In order to evaluate the proposed model, a case study is performed referring to real data from a city in Taiwan. The results are good showing that the model could be useful references for related managerial authorities.