... the dialog for the purpose: 2_251946_090000001.png The purple lines show the result. At this zoom level it looks a bit of a mess, but all becomes clear when zoomed in. I'm creating a curviform double-junction there. It's usual to stagger the turnouts to ensure a running clearance (and also to make it easier for the rodding runs). But by how much? At first sight it would seem that the closest clearance conflict would be at A, but on zooming in it is found to be at B: 2_251946_090000000.png Not by much, and these are the arbitrary clearance lines, not the actual bodysides. But even so it might be prudent to increase the stagger by snaking the turnout a bit further west. Or alternatively to increase the track spacing a fraction. This new function to generate the dummy vehicle outline envelope follows the settings for the dummy vehicle dimensions -- in other words the same effect as making a great many vehicle copies. It can run along the main road or turnout road (as here) in the same way ...