Dear friends, I'm from Vietnam and I'm working on Vietnamese signal system, which based on "chinaxhj-5x-JZ" <kuid:582228:4008007>. However, this signal doesn't work properly as I expected. I understand that there's a misunderstanding between "go straight" and "diverge" of the junction. Please help me finding solution to this problem. Thank you so much!!!
It must display "green" only for proceeding and "1 yellow" only for caution.
However, the signal works correctly with 3 branches junction:

It must display "green" only for proceeding and "1 yellow" only for caution.

However, the signal works correctly with 3 branches junction:

