土木營造與交通建設一直被視為台灣經濟的火車頭產業，而混凝土是營建工程最普遍且用量最多的施工材料。由於環境污染以及施工品質的考量，先進國家多採用預拌混凝土作為營建工地混凝土施工的標準作業模式。
由於預拌混凝土有其時效性，所以在生產時必須符合拉式（pull）需求，並遵守Just In Time（JIT）規則。預拌混凝土送達施工現場後，必須立刻進行安置、澆灌作業，因此預拌混凝土生產、配送排程需完全配合各營建工地的時間需求。預拌廠需要考量預拌混凝土的運送時間及交通路線、環境限制，發展出即時且有彈性的運送方式，並建構有效率的預拌車派遣排程方法。
本研究將探討影響預拌車之車輛派遣排程、配送路線規劃的主要因素，並由此建構出多目標之數學規劃，在兼顧實際作業、安全、品質、貨車定期維護保養的前提下，提供預拌混凝土業者更有效率之車輛派遣排程與途程模式。同時嘗試建立一個合理的市場機制，在混凝土產業營運以及環境污染破壞間取得平衡點。

Civil and transportation constructions are important industries in Taiwan. Concrete is the most popular and widely-used material in the construction industries. Due to the pollution and quality consideration, ready-mixed concrete is applied to construction sites in many developed countries.
Because ready-mixed concrete is a perishable commodity, the production of ready-mixed concrete must utilize pull method of material flows and follow just-in-time philosophy. After the ready-mixed concrete arrived in the construction site, the installation operation must begin immediately. Therefore, the production and distribution schedules of ready-mixed concrete must match the demand schedules of the construction site. Besides, the ready-mixed concrete factory needs to consider the vehicle routing and environmental constraints, and develops the just-in-time and flexible distribution rules and efficient dispatching and scheduling methods for ready-mixed concrete trucks.
This study is going to investigate the key factors that affect the rules of vehicle dispatching, scheduling, and routing of ready-mixed concrete trucks. We will use multi-objective mathematical programming to find optimal solution. Considering the practical operations, safety, quality, and vehicle maintenance schedules, we are going to provide the ready-mixed concrete factory a more efficient vehicle dispatching, scheduling and routing model. In additions, we are trying to build a fair market mechanism to keep balance between the business operations of ready-mixed concrete industries and environmental protection.

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