In order to seek the best way of laying median strip facilities，four typical forms of median strips in China were established through driving simulation，and trajectory and speed-related data were extracted. Based on the horizontal right of way in the road spatial right of way，the road utilisation rate was selected as an indicator to analyse the difference characteristics between the actual right of way and the nominal right of way. The results show that the overall range of fluctuations in driver trajectories at different height facilities is significantly different. Among the rightward offsets triggered by the shy away effect，the trajectory offset reaches the maximum in the reboundable traffic cylinders scenario R₅，followed by the traffic separate railings R₇ and raised pavement markers R₂，which are larger than that of the double yellow line scenario R₁ without the facility. While adding facilities triggers a shy away effect in drivers，a certain degree of lateral offset can improve road utilisation rate，up to 11.15%，which was found in R₅. At the same time，the installation of the facility inhibits the speed of drivers，achieving a two-way improvement in traffic safety and traffic design. Finally，the width of the median strip to satisfy the maximum nominal right-of-way utilisation was calculated to be 0.844 m and the facility's height to be 138.62 cm.