Acceleration compensate car-following model based on expect headway and its simulation

According to the deficiencies of traditional GM car following model revealed by simulation,combined with the safety awareness and following psychology of the driver,this paper clarified the expect headway of the driver during following,and introduced the conception of acceleration compensate based on expect headway,established a formula form for the acceleration compensation item by dimensional analysis which takes fully account of some practical constraints such as the maximum acceleration and speed,finally,set up a integrated acceleration compensate car following model based on expect headway.Numerical examples were presented to illustrate the differences between the proposed model and the traditional GM model,the results showed that the improved model could well make up for the drawbacks of traditional GM models and,proved that the acceleration compensate car-following model is reasonable.