Study on avoidance behavior model based on vehicle-bicycle collision in urban interchange

A disaggregate logit model based on collision avoidance behavior was formulated to research on the conflict of right-turning vehicles and straight bicycles in urban interchange ramp terminals. By analyzing the mechanism of the conflict of vehicle and bicycle, this paper thought that the main conflict of vehicle and bicycle could be regarded as the behavior of collision avoidance and the behavior of gap choice, and the concept of collision avoidance of vehicle and bicycle was mentioned. On the basis of the investigation, by analyzing of the factors of collision avoidance behavior and applying binary logit regression model, the disaggregate model of collision avoidance behavior was established, and then the parameters of this model was calibrated with the survey data. The results of this model test show that the value of goodness-of-fit is 4.804, and the values of accuracy for forecasting the behaviors of overtaking the bicycle and slowing down for avoidance are 91.3% and 88.9%.