This creates a very significant passenger challenge. How do the customers know which train to get on and what if they get on the even stop and need to get off a

This creates a very significant passenger challenge. How do the customers know which train to get on and what if they get on the even stop and need to get off an odd stop? They have to change train. If they can't pass each other then they don't save much time. In NY, the expresses are easier to understand because the rules are very simple.