... an interesting double slip. Then the final diamond at D is around 1:6.5 and just about long enough for a conventional inside slip in 00. I imagine the same idea could be applied to the other diagonal road. rather than guessing a number, making the track then using the roll vehicle only to find that it was too wide or not wide enough You shouldn't need to guess, you can now adjust the track spacing by mouse action with a dummy vehicle present. That way you can find the spacing needed: 2_141321_450000000.png Put a copy of the dummy vehicle in place first, and then roll it to the conflict position. Then the mouse action adjusts the spacing until it is clear. That was added in 213a. See para. 13 at: message 19148 and this bit of scruffy video: http://flashbackconnect.com/Default.aspx?id=r6BdZWxz5kk5ye1ek-P -Ag2 regards, Martin. posted: 16 Oct 2016 08:04 from: FraserSmith Hi Martin Thanks for your response. It has given me some confidence to carry on ...