Which of the following is NOT listed as a type of horizontal distribution model related to terminal design?

• A. Simple
• B. Linear
• C. Concourses
• D. Atrium

Answer: (D)

The question is about how passenger movement layouts are organized horizontally in terminal design. Simple describes a straightforward layout with a single core spine. Linear refers to a long, corridor-like arrangement where gates line up along a single path. Concourses describes multiple separate halls connected by links, allowing distinct flow paths for different wings of the terminal. An atrium, on the other hand, is a large open vertical space that connects levels and is a feature of the building’s design rather than a pattern for distributing passengers horizontally. Because horizontal distribution models focus on how space is laid out for movement across a plane, an atrium isn’t one of these patterns. So it’s not listed as a horizontal distribution model.