Abstract: A passage barrier, includes a drive that has a drive unit and an output unit, wherein the output unit is formed as a hollow shaft. The hollow shaft is mounted so as to be rotatable with respect to the guide element and the hollow shaft surrounds the drive unit at least in sections, preferably completely. The drive unit includes a first torque transmission element that transmits torques from the drive unit to a guide element. The drive unit includes a second torque transmission element that transmits torques from the drive unit to the hollow shaft. The torque transmission elements are formed geometrically similar, in particular identically and arranged on the drive unit. The first torque transmission element is arranged in a frictional and/or positive manner with respect to the guide element to be detachable and the second torque transmission element is arranged in a frictional and/or positive manner in the hollow shaft to be detachable.