This is very cool! I love the idea of having a device dedicated to local transit as opposed to having another thing pulling me to my phone. I wish there was something similar for American cities.
Maybe a Tidbyt? Looks like it works for a few US cities' transit systems. https://tidbyt.com/
I haven't used this personally, though, so can't really vouch for it yet
I don't like the Tidbyt v2. I hated it from the minute I unboxed it, would not recommend. The pixels are very blurry and the image is not crisp at all. The v1 was pretty good, looks more like a dot oriented board (far less resolution). more discussion: https://discuss.tidbyt.com/t/gen2-blurry-screen/6654
I replaced the tidbyts with a Dakboard, specifically a https://shop.dakboard.com/products/pixeltoptech
Thanks. We are spoiled here in Switzerland with all the public transit data being open and available to anyone.
I may expand to more regions but at this time the device is only CE certified and for the US I would need to get FCC.