Abstract
This study is construction of a decision-making model for merging car driver on the highway junction. The decision-making model needs to consider characteristics of drivers. To describe of model we use the Analytic Hierarchy Process method: AHP. To construct of model we use result of traffic volume survey, an experiment at highway junction and a questionnaire survey. To check on the reliability of model, we analyze the merging car behavior by using decision-making model. As the simulation results, it shows that this model can reproduce the decision-making of the real drivers.