A research on the side-lane vehicle cut-in control in adaptive cruise control system

To remedy the defect of adaptive cruise control (ACC) regarding the time-lag in controlling side-lane vehicle cut-in maneuver and fully utilize its original functions, a side-lane vehicle cut-in controller based on hierarchy structure is designed. The controller is then trained by fuzzy support vector machine with side-lane vehicle cut-in data acquired under real traffic environment, with a cut-in intent identifier generated for detecting the cut-in maneuver of side-lane vehicle. With the longitudinal relative distance between host vehicle and side-lane vehicle and impact remaining time as inputs, and utilizing the desired acceleration generated by fuzzy control to adjust the desired movement state of host vehicle, the dynamics control of host vehicle is fulfilled by ACC system. The results of simulation and real vehicle test show that the side-lane vehicle cut-in controller designed can work coordinately with other functions of ACC system, effectively improving the driving safety of host vehicle under the condition of cut-in maneuver of side-lane vehicle.