A passage barrier includes two guide elements that cooperate such that they define a gate region, through which a person passes from an entrance region into a passage region. At least one of the guide elements includes a vertically running profile, on which a locking apparatus is arranged. The locking apparatus has a torque transmission toothing, which engages into a complementary torque reception toothing of a hollow shaft of a drive. A circular stop disc is also provided and has a toothing engagement, which is engaged with the torque transmission toothing. The stop disc has a circumferential surface with a stop lug, which protrudes radially from the stop disc circumferential surface, and cooperates with a stop element arranged on the vertically running profile such that a rotation of the stop disc is delimited by the engagement of the stop lug against the stop element.