The entrance/exit locations of a large parking garage will largely affect the traffic flow operations on adjacent streets. In the past, the selection of entrance/exit locations has relied on the subjective judgment of the designers. No planning tool is available to assist the designers in this process. The objective of this research is to develop a model for selecting entrance/exit locations based on the minimum travel time of network. The model may be used for evaluating traffic impact brought about by the parking garage, as well as various traffic management countermeasures for alleviating the impacts. It may be used as an effective planning tool for parking garage planning and design. In this paper, the past approaches for selecting entrance/exit locations are reviewed. Relevant theories and techniques for model formulation are explored, and the proposed methodology described. A case study will be conducted for testing the validity and reliability of the proposed model.