Usage of Triggers on Networknodes

Hello,

I´ve built a model in which I use the OnArrival and the OnContinue Trigger of Networknodes. There had been several problems in and now I got the hint, that even if I make the Operators don´t travel offset for Load or Unload tasks the Operator fires the OnContinue trigger as soon as he arrives the Networknode. Because for the logic the Operator leaves the Networknode for Load Unlaod anyway. In my model the OnContinue trigger even is fired when the Operator has to stop and wait at the Networknode.

The way to solve, is to find out from which edge the Operator arrives and use this Information probably in an If statement.
In my model it will be very complex to find this out for every seperate Networknode.
So if I understood the usage of the Networknode Triggers wright, for what would I need an OnContinue Trigger that always is fired the same time as the OnArrival Trigger?
Is the way with the edges the only one that works?
Thanks for your help.

OK, I found out that the Operator allways leaves the networknodes on edge 0 but comes back from edge 1 and leaves it finaly on edge 2. Looks like allways the same procedure.