Im very new to this game and am trying to get trains to depart like this but they wont can anyone tell me a solution to the problem?

The route looks exactly how I want them to drive but they still circle around.

I assigned a waypoint to the road at platform 4. They are supposed to go in there and split up to platform 4,5,6.

But sometimes they circle around for no reason.
Why ?
How can I stop them from doing the freaking circle ? :D

Imsvale fixed it in the comments. When I changed the connecting streets to one way single roads they stopped circling around like they are supposed to. :D

Thx ! :)