• Which the release of FS2020 we see an explosition of activity on the forun and of course we are very happy to see this. But having all questions about FS2020 in one forum becomes a bit messy. So therefore we would like to ask you all to use the following guidelines when posting your questions:

    • Tag FS2020 specific questions with the MSFS2020 tag.
    • Questions about making 3D assets can be posted in the 3D asset design forum. Either post them in the subforum of the modelling tool you use or in the general forum if they are general.
    • Questions about aircraft design can be posted in the Aircraft design forum
    • Questions about airport design can be posted in the FS2020 airport design forum. Once airport development tools have been updated for FS2020 you can post tool speciifc questions in the subforums of those tools as well of course.
    • Questions about terrain design can be posted in the FS2020 terrain design forum.
    • Questions about SimConnect can be posted in the SimConnect forum.

    Any other question that is not specific to an aspect of development or tool can be posted in the General chat forum.

    By following these guidelines we make sure that the forums remain easy to read for everybody and also that the right people can find your post to answer it.

Tutorial Overlay and Diamond Crossing


Staff member
FSDevConf team
Resource contributor
This is a tutorial written by Matthew Brooks and I quote his readme below:

This tutorial does not introduce new concepts and I claim no credit whatsoever for them. I hope that it does give some detailed guidance on how to use concepts which have been in use for some years.

The Overlay Crossing Technique described here was devised by Jim Vile

The Diamond Crossing Technique described here was devised by Steve Parkinson

The tutorial is based on advice given to me by Jim Vile when I was developing KSEA Seattle-Tacoma for FSX default airport, which transformed a nightmare of timeouts to much smoother traffic flow than I had dared hope for. My thanks to Jim, especially, for all of his advice.

It can be downloaded from: