Sorry about the problems you're having with the map. Would republish it to reset everything but I no longer have the map files in the editor to do so.
I have run into invisible walls on other creators maps while playing with friends. One of us passes through it and the other is stopped by it. Odd problem to determine the cause of; is it player oriented, the map itself, or the game,...? Most problems with maps are with the files in the map (easy fix), I know of no file or reasoning for invisible walls.

La map est sympa mais a des endroit les véhicules sont bloqué par une sorte de mur invisible et il est impossible de bouger une fois que le véhicule est bloqué

Map no good, locked garage has bug that freezes ur truck when u deliver garage points. So u end up stuck with 2 trucks and the only thing u can do is restart and yet again a diffirent truck got stuck at the garage when I delivered the garage points.

I drove back and forth through it with regular trucks. Loaded my mod folder and drove back and forth through with mod trucks. I didn't run into any problem.
Appears to be ok to me, but some problems tend to only affect individual players and not others. Maybe it will work for you as well bass2.

Thanks for letting me know Bass2.
As you stated river 5 is basically just a mud puddle (little crossing), so there isn't anything there out of the ordinary to cause problems (mods, hieght map,...), so there is nothing in the map itself I could change to fix such a problem.
I republished (reloaded) the map. Hopefully this will clear up the problem.

theires a bug at river 5 when you go at this little crossing the truck get stuck at an invisible wall and impossible to winch it out so nothing can recover it so unless you can recover to the garage ..this road it's impossible to pass ...repair that

This one is a bit harder than the previous one (Scavenging for Logs). A trail map, that is a logging map. And the log scavengers are on hills and down in holes. Had fun testing it.

Tasty meat! Thanks for sharing another scavenger map. They are so well made.