In order to demonstrate the effects, the uneven road profile was taken into account and a vehicle model was developed with the consideration of uneven road profile. The effects of uneven road profile were realized by the application of stochastic four-wheel road uneven input. Finally, in conjunction with the conventional ABS logic threshold control strategy, a simulation was conducted to analyze the effects of uneven road profile on the braking performance of automobiles equipped with ABS. It is shown through the simulation results that the effects are obvious. It is viable to design more effective ABS control strategy based on the results.