Each module or group of modules meets standards for interface such as rail location, height and electrical connections so that each can connect with another. Each module or group of modules is six feet long or a multiple of six feet, such as twelve or eighteen feet.

Here is an example of one of the drawings in the specifications. This shows the mainline track spacing from the front and ends of each module.

Request the club's standards manual by clicking the "Contact us" link at the right. We'll send it to you as a .Zip file 1.6mB email attachment.