1. A safety arrangement for controlling automatic travel of a fully automated vehicle, the arrangement comprising: one or more forward-looking detection systems for detecting objects in a future path of the vehicle; and a control unit configured to determine a detection confidence for detected objects; wherein the control unit further is operable to, upon low confidence for existence of a detected object, control a brake system of the vehicle to apply a predetermined limited amount of braking until high confidence is obtained for existence or non-existence of the previously detected object, whereupon the control unit further is operable to control the brake system apply full braking if high confidence is obtained for existence of the previously detected object and to discontinue braking if high confidence is obtained for non-existence of the previously detected object.