What does your zoning look like?
Those un zoned stripes in the terminal are likely to cause a lot of issues in the terminal. Zones need to be connected all the way through.
I can also see that your vehicle check-point needs a service road on one side and public road on the other! 
I got some passangers stuck on the escalators, where other passangers can normally use the same escalator. The game is annoying me with notifications. How can I get rid of those stuck passangers? 
The notification should highlight the paths that are not executing as expected via a line and a start and end position. Where does it point to and from?
