1. A vehicle driving behavior predicting device configured to predict a driving behavior of a vehicle at a prediction target point based on speed information or acceleration information of the vehicle, the device comprising: a storage unit configured to store a reference template indicating a transition of the speed information or the acceleration information of the vehicle corresponding to the driving behavior being a prediction target in a predetermined prediction section to the prediction target point; a converting unit configured to convert the reference template to a converted template indicating a transition of a speed or acceleration from an entry speed to a case in which the driving behavior being the prediction target is exhibited based on the entry speed of the vehicle into the prediction section; and a predicting unit configured to predict the driving behavior of the vehicle at the prediction target point by comparing the converted template with a current transition of the speed information or the acceleration information of the vehicle.