Abstract: In order to determine reasonable and continuous driving time of a driver,a selection model of reasonable and continuous driving time is proposed.On the basis of determining the factor of driving behavior,the constraint factor set of reasonable and continuous driving time is defined by using factor analysis method.Then,the acute point of factor values curve is found through secondary differential value calculation,and the corresponding time is defined as reasonable and continuous driving time of this factor.Finally,the standard value of reasonable and continuous driving time is decided by using Bayesian Data Fusion algorithm.The feasibility of this model is proved through a case.