The depot functions as the brain, and it communicates to the train through the rails. Each rail is metallic and split into two sections by a non-conducting rubber piece. Each section carries a different type of information.

Close up of the rails The DC voltage in the left side of the left rail controls the speed of the train. The phase of the current corresponds to the direction of movement while the amplitude is the velocity. All voltages are low enough not to cause an electric shock.

The right side of the left rail is a signal that is sent out by the train notifying the depot where it is. Since each piece of scenery's rails are independent from the others and connected directly to the depot by cables beneath the scenery, the depot will only get this signal from the section that the train is on.

Both sides of the right rail are used for inputs from the depot such as what speech to play for the scenarios.