... excessively sharp curve in the slip roads, and even the usual short 1:24 blades would be too long. On the other hand, for an outside slip you would normally want a diamond shorter than 1:5, otherwise it is going to be very long, and you would have trouble finding space for the switches. Instead of having all your diamonds around 1:5 or 1:6, I suggest changing the diagonal road to a gentle curve, so that some crossings are shorter, and some longer: 2_141304_090000000.png Here I changed the turnout at A to a B-6.5, and moved it back a little way round the curve. I made a gently curving branch track from it. Then the diamond at B is around 1:4 and suitable for double outside slip roads. There is just about room between the main roads for the switch. My recent video about moving switches close behind the crossing may help. The diamond at C is about 1:10, so will need to be a switch-diamond, making ...