本文之主要目的在建立都市運輸與土地使用整合模式，以預測及模擬都市之成長。此模式利用最佳化法結合運輸與土地使用模式，其中一方面以空間互動理論模化人口與就業之空間分佈，另一方面以均衡指派法處理路線指派工作。 本文獲得以下結論： (1)就模式結構方面，整合模式考慮了運輸與土地使用之交互回饋，使得路網運輸費用影響都市人口和就業之區位選擇，而人口和就業之空間分佈亦決定運輸路網之流量與成本。 (2)就模式技術方面，整合模式採用最佳化技術，並以均衡指派法從事路線指派工作，因此不但運輸與土地使用間之均衡狀態可達到粗略的收斂，而且旅次需求之路線指派亦可遵循駕駛者選線行為。 (3)就模式應用方面，整合模式處理路線指派問題，乃以路段流量為決策變數，因此適用於都會區大型路網。

This paper aims to develop an integrated transportation and land use model which can be used to predict and simulate urban development. The model which utilizes optimization technique to incorporate transportation and land use is developed. In one aspect, the model adopts the spatial interaction theorem to distribute population and employment. In another aspect, the model uses equilibrium assignment method to assign travel demand. The paper comes to some conclusions: 1. Concerning with the model structure, the integrated model has considered the interaction between transportation and land use. The locations of population and employment are influenced by the network travel cost which is also affected by the distribution of population and employment. 2. As far as model technique is concerned, the integrated model utilizes optimization technique as well as equilibrium assignment method in model’s solution algorithm. Not only could the equilibrium state of transportation and land use obtain, but also the route assignment submodel might obey the drivers’ behavior. 3. For the applicability of the proposed model, since the paper has used the are flow as decision vector in route assignment problem, the model would be convenient to be applied in a large metropolitan area.