The model railroaders, who want to ballast their tracks individually, will use the Roco Line track without embankment. Roco has a simple marking system for the tracks. All tracks with "G" are multiples or parts of a straight track of 320 length. Tracks with the designation R are different radii. Between each radius there is a distance of 61.6 mm from the center of the rail to the center of the larger radius by "1".