redirection makes traveller blocked

Hi everybody

I have three transporters which are sent to collection points to collect container.
suddenly, one link along the path becomes blocked and they change the direction when arrive at the node of that edge. that means in the onarrival trigger of the node (which one encompassing link is blocked), the path is changed.

The strange thing is that the first one goes in the state of blocked while the rest can easily continue!

any comment is appreciated.

Hi,

my first idea would be to have a look how often the OnArrival Trigger is fired. Because TE leave Networknode to edge 0 and come back. This way triggers are fired twice in a short time.
Maybe you can share a model!?