Abstract: A double-decker railcar with continuous circulation on the upper deck and access from a high platform has at least one access door to the railcar the bottom of which is at the level of the high platform. An intermediate access landing to the railcar is level with the bottom of the access door inside the railcar. An access stairway to the upper deck runs from the intermediate landing and an access stairway to the lower deck also runs from the intermediate landing. A stairwell contains at least parts of the access stairway to the lower deck, the intermediate landing and the access stairway to the upper deck. A floor of the upper deck is truncated in a given area delimiting the stairwell at the level of the upper deck. The floor of the upper deck defines a continuous plane to enable continuous circulation on the upper deck.