PlayStation Sand Patch Grade (u876-b) Can't Finish Because Of Red Signal

Same Situation like U876-A
Sand Patch Grade - Chapter 3, U876-B - Coal Turnouttrack to Yoda

At the last point of the scenario, I wait for a red signal to turn green, but it does not change.
i tried it several Times, but always the same.

 

Did you make a request from the dispatcher?

 

Given that there's a train in front of you, it would seem your on the wrong track , perhaps you did not change a switch somewhere ?

 

This is not a train, but cars that need to be attached!