The main purpose of this modular group is to provide a place to operate finely detailed HO scale standard gauge models in a realistic fashion. Operating trains is the important aspect of meets, so the layout setup does not follow the traditional "endless circle" format of modular layouts. Instead it follows a "free-form" configuration that does not readily lend itself to continuous running; trains originate from one point on the layout, traverse it, and then terminate at the other end (or back at the starting point). This format results in modules that are viewed from both sides, and that are designed to be reversible (rotated 180 degrees).
This type of operation requires end points, typically in the form of stub end yards or reverse loops. A layout may then take on the form of an "out-and-back" or a "point-to-point". Other more complex formats are possible if "junction" modules are built; for example a wye module could allow a branch line operation.
Between the end points of the layout are modules which carry one or two main lines from one end to the other. Large modules may be assembled from small, easily transportable "sections" to create a large layout feature; for example a passing siding long enough for a full-length train could be created as a multi-section module.
To date, we have constructed numerous double-track main line modules, primarily to facilitate public operations where frequent trains are desirable. We have also built a large number of double-to-single transition modules and a number of single track mainline modules.