Track Components and Geometry

Curved track (curve)

Graded concentric radii R1–R3 of a track system

A curve is a track section with a fixed radius and arc angle (e.g. 30°). Track systems offer several graded radii (R1, R2, R3 …) designed as concentric circles: if you lay R1 on the inside, R2 fits outside — the offset equals the system’s track spacing.