In the reverse engineering scenario, ACSES is causing a lot of trouble. At 900 yard before a red signal aspect it sets the speed limit to 0, so you can proceed with a speed of max 4Mph. This comes on top of the other issues with ACSES. I come again at the question: who tested this? Has it been tested? How can you miss this?
I personally would like to see a proper demo with Matt about how these work. I couldn't make head nor tail of PZB until his stream and I think this would help with this too. I have no constructive contribution to these posts as I genuinely don't know what's normal and how it works.