[2020] tram shelter on tram only track?

Each road has specific settings for how different stops will look for them, so if a road isn't set to have a shelter, it won't have one. But you can always add a shelter yourself where you want it. For that, you just need the mod Find It and a shelter prop, like the one you linked by clus. Then use Find It to find the prop and place it how you want it at the stops you want to have shelthers.