[natch]

No, you are not understanding what I explained. There is a moving horizon of time during which the ten seconds is continually extended, and the system needs to draw the line somewhere. When does the final ten seconds before cutoff begin? Your examples don't explain this. This is not easy stuff to solve without some compromises.

[AlphaSite]

If it’s limited on what roads it can run on the 10 second window makes perfect sense. Just enable when you’re entering an unsupported roadway.