Turnout, crossover turnout, and rail transit system

A rail transit system, comprising a turnout structure and a railway vehicle, wherein

• the turnout structure comprises at least one turnout, and the at least one turnout comprises:
• a fixed beam comprising a first side beam and a second side beam;
• a movable beam set disposed between the first side beam and the second side beam and defining two switchable travel lanes, and a top surface of the movable beam set configured as a first locomotion surface for locomotion wheels of the railway vehicle to travel;
• and
• the movable beam set comprising a rotating beam and a moving beam, a first end of the rotating beam comprising a rotating center, the rotating beam configured to rotate around the rotating center, and the moving beam connected to a second end of the rotating beam and configured to move along a path;
• and
• the railway vehicle comprises the locomotion wheels and guide wheels, the locomotion wheels are configured to roll on the top surface of the movable beam set and a top surface of the fixed beam, the guide wheels are configured to roll on a side surface of the first side beam and a side surface of the movable beam set opposite to each other, or to roll on a side surface of the movable beam set and a side surface of the second side beam opposite to each other.