The system would be changed from looking like a "Z" system on a map to an "H" system. One trunk would run via the new Lexington Avenue Line down Park Avenue, and the other trunk would run via the new Seventh Avenue Line up Broadway.
The existing transportation network's layout would undergo a change from its current "Z"-patterned appearance on a map to an "H" configuration. A main route would be created along the newly developed Lexington Avenue Line down Park Avenue, and another primary route would ascend up Broadway via the new Seventh Avenue Line.