In order to improve driver’s awareness of vehicle roll state and prevent the condition of rollover, a novel vehicle rollover warning system is proposed. Load Transfer Ratio value is acted as a threshold of triggering rollover warning system. When the system is triggered, the assistant torque of EPS motor is reduced, thereby enhancing the driver steering torque, and the rollover warning light is activated. Therefore, the driver can feel the danger driving condition. Simulation results in MATLAB/Simulink show the effectiveness of proposed control strategy to improve vehicle handling stability. 