An improved hood-type closure installation for vehicles including a closure supported on the vehicle body by a pair of hinge assemblies for movement between open and closed positions relative to an opening in the vehicle body, each hinge assembly including an intermediate support pivotally mounted on the vehicle body for movement between extended and retracted positions. The intermediate supports carry pintles to support the closure for the aforementioned movement between the open and closed positions and are normally maintained by frangible locking means in the extended positions. Forced rearward bodily shiftable movement of the closure generally in the plane thereof initiates fracture of the frangible locking means after which each intermediate support pivots from the extended to a retracted position and simultaneously forcibly constrains the rear edge of the closure to move in a path of motion toward a position below the corresponding edge of the vehicle body opening.