MODELING OF THE GAP ACCEPTANCE BEHAVIOR AT A MERGING SECTION OF URBAN FREEWAY

Gap acceptance is one of the most important components in microscopic traffic characteristic. Recently it has been used to study simulation models and the ITS(Intelligent Transport System). We need the mathematical modeling of Gap Acceptance behavior. In this paper, we developed a gap acceptance model based on the discrete choice theory. This model is intended to combine these elements along with an experimental and quantitative analysis of drivers' behavior in actual merging situations. For reflecting drivers' behavior, the gap acceptance model is designed. To develop this model, real data are used to set up explanatory variables and to estimate the model. The factors determining Gap Acceptance include lead gap, lag gap, front gap, heavy vehicle and remained distance. Congestion greatly affects gap acceptance in that it depends on gap acceptance to determine whether there is traffic conditions are congestion or not. When congestion conditions occur different behavior such as nosing occurs and provides different results.