the transverse members and the one platform track 20 respectively by rotating the shaft 19 by means of the drive assembly 15 two front and two rear flat belts will be wound or unwound synchronously resulting in a uniform lifting or lowering movement of the respective transverse member and thus of the platform tracks mounted thereon a particular advantage is the fact that the flat belts are of a very short length so that material strains do not play a part in practice in the following the embodiment of the invention shown in fig4 will be described which corresponds to the four post platform described above with reference to fig1 as regards the essential features and measures accordingly components having the same structure or function are denoted by the same reference numerals and their description will not be repeated the essential difference of the parking platform according to fig4 in contrast to the embodiment of fig1 lies in the arrangement of the drive assembly 70 which in this parking platform according to fig4 is fixedly mounted to the upper end of the post 4 and drives an upper shaft 71 the shaft 71 extents on a lateral side between a front and a rear post 3 4 and is rotatably mounted to mounting arrangements 72 73 at the upper end part 74 75 of these two posts 3 4 the right shaft end in fig4 is connected to the driven element.