(fan made) this is a screen meant to be placed in the middle of the car (like the orange dot matrix on the TR's) and display the station you're at and the next station as well as show connections and service updates. Connection priority: Subway>Streetcar>GO>other transit agencies. So for main street the announcment would be "change here for 506 and GO teansir i made an info screen for Line 2's new rolling stock to replace the old T1s and to allow for CBTC singnalling. I also want to see LEDs for the doors simillar to those in Montreal and the R211s but flashing orange when closing because Toronto.
Once again, fan made