Whereas a conventional domestic stairlift is designed to transport a seated user in their home, a Platform Stairlift has a fold away platform that accommodates a wheelchair, meaning that the user can remain in their wheelchair throughout the entire journey. Platform Stairlifts are most commonly used in public buildings and are generally categorised into the following groups; Straight Rail – This is where the lift rail is set at the same angle as the staircase / handrail and has no curves or bends in it. Curved Rail – these are used to negotiate bends / curves and also changes in gradient such as mid-landings.