An ambulance has two stretcher support stages placed one over the other next to one side wall of the ambulance for taking up stretchers and near the side wall there is a single guiding upright or two spaced guiding uprights, on which runners are guided and on which they may be locked at different heights. On the runners or sleeves, brackets are fixed, more specially by way of horizontal bearings, the stretcher stages being supported on the brackets. Rails running in the length-direction of the ambulance, and designed for supporting the stages, may be changed in length so that the separate runners may undergo separate adjustment in height. The front upright or a support with the same effect is fixed to the side wall of the ambulance or to the ambulance's floor, while the back guiding upright is supported by way of a floor wheel on the ambulance floor, such wheel being fixed directly to the lower end of the upright or to a post on which the upright is supported. Furthermore, the ends of the brackets supporting the lower stage which are nearest to the middle of the ambulance are supported by way of floor wheels on the ambulance floor. The front brackets are joined up by way of bearings (with an upright axis) with the front guiding upright or the support so that the back ends of the two stretcher support stages may be turned towards the middle of the ambulance in a horizontal plane. Furthermore, the guide rails placed towards the middle of the ambulance may be turned about a front upright bearing and may be moved, using a horizontal guide tube with a runner, towards the middle of the ambulance.The back supporting and guiding upright has a locking system for fixing it to the ambulance side wall. Furthermore, the back end of the top stretcher support stage, which is nearer the middle of the ambulance, may be locked with the back door of the ambulance in the transport position by using a locking bolt.