This paper proposes a multiple-vehicle longitude control method with considering unknown control input of the leading vehicle.First,the linearized vehicle dynamics is obtained by adopting a technique of the exact feedback linearization.Then,based on the state information of neighboring vehicles,a distributed control law is designed for each following vehicle with the bidirectional-leader communication strategy.Taking the upper bound input of the leading vehicle into account,an effective control method is proposed to guarantee the inner stability of the multiple-vehicle systems with the maximum rate of convergence.Finally,the simulation results show the effectiveness and superiority of the proposed controller design algorithm.