... line goes straight, I shall try your other suggestion, thanks again. 2828_261217_340000000.png posted: 26 Jan 2018 17:50 from: Martin Wynne p.s. John, I think the turnout will need a curviform V-crossing. Martin. posted: 29 Jan 2018 11:38 from: johndon Thanks again Martin, I managed to get the plan finished. Out of curiosity, how would you know that the turnout would require a curviform V? Is there some sort of standard of does it just come from experience? John 2828_290637_460000000.jpg posted: 29 Jan 2018 14:12 from: Martin Wynne johndon wrote: Out of curiosity, how would you know that the turnout would require a curviform V? Hi John, There is no specific rule, the track designer is assumed to know what he/she is doing. As it happens this question has crossed with what I'm currently doing in the Templot Companion to replace the explanation in the old 2000 track planning tutorial. Prototype curviform V-crossings are not used where not actually needed, because they involve ...