Q: Where are all the intersections?
A: On the forum!
https://forums.factorio.com/viewtopic.php?f=194&t=100614
Q: Is the name technical wrong?
A: Yes, it's no longer just controls but its own scenario

Q: Can I use the old savefiles with this mod?
A: No, its all in a scenario now. You can press new game and pick testbench as the scenario. If you want to use the savefile you can pick an older version.

Q: How do I use it?
A: Either hold a bp in hand and press the rail button or build your own intersection on the ground and press the rail to get the stations. If you want to continue to adjust it press the red X button to remove the extra rails and stations and press the rail again when ready to test.
Q: What is the margin of errror in testresults?
A: roughly for quick tests 30min, it's about +- 1. For medium tests its +-0,5 for long test its +- 0.1.

Q: What does the different set do?

Set 1: 33% each direction
Set 2: 45% each straight/crossing turns, 10% non-crossing turns
Set 3: 90% crossing turns, 5% each straight/non-crossing turns

For intersections with ramps only set 1 is run.

Q: Copiable results?
A: The results are stored in the factorio log file. found in AppData\Roaming\Factorio\factorio-current.log