I think it's a bus stop since the platform isn't really positioned so the passengers could get on a train. The lower platform across from the phone looks more like where someone could get on, and that's positioned for a bus. So yeah, I think it's a bus stop with a train track and crossing that happens to be beside it.
Great set, I say it is neither. It's a Manual Level Crossing, which, back in the day, would have had a rail employee watch from the building for the train and lower the crossing gates as the train approached. The waiting area does appear more set up for a bus stop. Set 4539 is the same thing, but no waiting area. The real question is how did the minifig get up to the observation area????
This is true!! There is no ladder on this one hahaha and I agree it is more of a bus stop and it is on the road not the track but I had to ask. Still a cool stop regardless!!