Abstract: The model that describe movement disciplinarian of distance headway in car following is one of the important content of car following theory.Because the factors of infecting distance headway are too mang, and there are not time serial distance headway data, there are not distance headway theory models accepted normally.In this paper, based on the dynamic car-following behavioral data collected by the instrumented GPS vehicle in real traffic flow of given drivers behavioral, traffic and road conditions, the distance headway-speed models were built.The distance headway continuance increase in the reaction time of following driver, distance headway-speed model is linearity in the time of following car acceleration to chasing leading cars, and the headway-speed model is exponential.The distance headway continuance decrease in the reaction time of following driver, distance headway-speed model is linearity in the time of following car deceleration to chasing leading cars, and the headway-speed model is exponential.