Abstract: It is hard to establish a precise car-following model because of the uncertainty in driver's behavior. A car-following model is developed based on the radial basis function (RBF) network. With this the nearest neighbor-clustering algorithm (NNCA) is improved, and the results of modeling are examined by the car-following data. The simulation results show that the proposed RBF network has a higher precision and requires shorter training in the prediction of the car-following model compared with the multiplayer neural network.