... want a "straight-over-straight" V-crossing instead of the curved V-crossing, so we insert a zero-length easement to straight transition at the end of the turnout curve: 2_260848_580000002.png With the mysterious result that the smallest radius is back to showing 1052mm, despite there being no obvious change in the radius of the turnout. Zooming in we can see what is happening. There is indeed a short length of 1052mm curve, and Templot is correctly reporting it as the smallest radius on the template: 2_260848_580000003.png The rail over the very short red section between the end of the transition zone and the end of the turnout curve is curved at 1052mm radius, because at that point the main road is beyond the transition zone and therefore straight. Corresponding to the very same section of rail in the first screenshot above. In practice of course such a short section of curve has no practical effect and it would not be possible to model it as such. But seeing the figure on the screen could be alarming when designing the track if ...