An improved car-following model considering variable safety headway   distance
  Considering high speed following on expressway or highway, an improved car-following model is developed in this paper by introducing variable safety headway distance. Stability analysis of the new model is carried out using the control theory method. Finally, numerical simulations are implemented and the results show good consistency with theoretical study. 
Yuhan Jia, Jianping Wu, Yiman Du
cs.NA