A junction device is connected to an anchor belt retractably mounted inboard an occupant seat and slidably encircles a continuous-loop belt having upper and lower ends mounted on the door to define lap and shoulder belt portions. A yieldable spring, preferably a rubber O-ring, is sewn to the anchor belt and hooked over the junction device to establish the junction device at a normal angular position relative the anchor belt in which the junction device assumes a streamlined lie-flat position with respect to the occupant torso to thereby facilitate low interference travel of the junction device across the occupant torso during movement of the door from the closed position to the open position.