This paper deals with a design solution that allows fast and safe boarding and leaving of passengers at railway station platforms from 150 mm to 550 mm higher than the head of the rail. This design solution is based on the requirements of railway infrastructure administrators, transporters and also manufacturers of passenger rolling stock, which the aim is to reduce the time required for boarding and leaving of passengers to the railway vehicle, to reduce the time of the train in the station and thus increase the overall transport speed. This device is conceptually designed for the new double deck railway vehicle, which is used for suburban and regional transport. The designed solution meets the current legislative and normative requirements, which are specified for the selected area of vehicle construction and after performing a series of tests, it has a high potential for putting it into real operation. Selected parts of the construction were verified through a series of simulation analyses. This article also includes a study, that deals with the optimization of the boarding area considering designed changes in the construction of the floor and a draft for modification of the vertical clearway height of the boarding entrance area in the rough construction of the vehicle.