Colored lights on the model board represent positions of railroad switches in the plant , as well as the indication of trackside signals. Small pushbuttons or toggles on the model board allow operators to remotely throw the railroad switches and change signal indications. A close up view is shown below. The signals and switches are interlocked , or linked in a controlled manner to avoid dangerous situations. Wayne is an L-shape in the corner at left.
Wind is another L-shape, in the corner under the clock at right.
This is Wayne. This is Wind. The Doylestown branch exits upper right, and the Hatboro branch crosses middle right. The two letters in quotes following some names are original abbreviated symbols for important locations. Often the symbols have interesting stories behind them.