Thanks to this curve, you can move the track by 8 studs left or right, very usefull in mulit track layouts
radius of curves = R34 studs
This special curve has a radius of R34. R34 falls outside the 'absolute geometry' of the Trixbrix modular system. Usage other than for an S curve is not recommended. It is not possible to make a quarter, half or full circle with these R34 curves, as can be seen in the image below.