... transition. It followed the initial radius, but when it came to the transition change marker, it got off centre line through the transition area, still following the starting radius. See attached image. It is a shame because this is such a great essential tool aid and very quick to use. I'm not sure if you can do anything about this, but hope this does not cause you too much work, I know that this is a very welcome recent addition to the TDV. All the best, Brian Nicholls. 1853_271411_460000000.png posted: 27 Mar 2012 20:05 from: Martin Wynne Brian Nicholls wrote: When checking clearances using the Dummy Vehicle option, I'm sorry to say, that I found the dummy vehicle did not follow the curve through a transition. Hi Brian, It's working here through transitions and slews -- naturally I tested that, very thoroughly. But maybe not thoroughly enough -- please could you post your box file for these templates so that I can see what's happening. Thanks. regards, Martin. posted: 27 ...