A conveyance device has two endless arrangements of tread steps, step plates or pallets driven in a transportation direction by a drive. Adjacent to a first longitudinal side of the first arrangement is a first balustrade with a handrail, and adjacent a second longitudinal side of the first arrangement is a second balustrade and handrail. The second arrangement is located parallel and next to the first arrangement and is also driven by the drive. The second balustrade is configured as a center balustrade between the two arrangements to be used by persons on both arrangements. A third balustrade and handrail is adjacent a second side of the second arrangement.