Jag trodde att "stanna" menade "to stay"? Should "the bus stays by the stop" also be accepted? For instance, if the bus is being held there to regulate the service?
I think I'd translate The bus stays by the stop into Bussen blir kvar vid hållplatsen or something like that. We don't really like to use stanna in that sense. If you add a particle, like stanna kvar, it would sound much better.