1. A collision position predicting device comprising: moving object detection unit to detect a moving object on a road; and collision position predicting unit to predict, upon detection of a moving object crossing the road by the moving object detection unit, the collision position of the moving object and the subject vehicle based on a moving vector of the moving object; wherein in cases where the moving object crossing the road into which the subject vehicle has entered is detected at the time when the subject vehicle has turned to the right or to the left, the direction of the moving vector of said moving object used for the prediction of the collision position by said collision position predicting unit is set to a direction vertical to the road into which the subject vehicle has entered.