In games it is important that trains can stay up to speed, for the best flow of a network. In recent games we’ve noticed that curves in particular often aren’t long enhough, causing trains to slow down.
This screen shot shows various curves.
Especially Curve A has been frequently used lately in Public Server games, although our game rules forbid the use of 45 degree turns suspects still tend to use them. I also like to point to the guide how not to build
For more in depth info about curves see the following pages: