NJ Transit’s data operation is sub-par. The developers of the “Transit” app have been sparring with them to get live bus data restored https://www.northjersey.com/story/news/transportation/2023/1...
This feels like an internal app that somehow got a public URL. It has neat features like being able to make the same departure board they have in their stations, and it has a departure view that shows how many people are on the train: https://radar.mta.info/countdown/GCT