Here again this is down to my user error when aligning the set up disks, but it demonstrates how accurate it is. It's interesting that the red and green (right and left) vanishing points are slightly offset. When you have set it up, you toggle between the vanishing points, and the brush becomes locked into the set direction I have used the vertical perspective lines by way of demonstration, and when zoomed way way out, they are pretty close to parallel, so that is down to my error, and the small image size With single point perspective, everything facing you is square on. I have used left, right, and vertical here In this case it is Single Point perspective, so one would do. It's Vanishing Lines feature works by having you align the disks to the image for each of up to six vanishing points. It was initially sold as a brush smoothing aid, but has evolved and evolved to become and immensely powerful drawing aid. It is only available for Windows, and costs about $35. You said you'd take a look at Lazy Nezumi Pro. I think I have positioned the figure reasonably well to fit the scene though, but note I flipped him horizontally because he needed to be move to the left, and his natural perspective was as Lutz had said, and he'd been standing a little to the right of the camera lens axis. If anyone does know where these trains might have been taken, and can find other pictures of similar trains with passengers getting on and off, then you'd have a better idea. Following through on this puts the camera height higher than I'd anticipated, although I am making an arbitrary assumption about where the base of my copied red arrow should be. It looks like you need to step up to enter the train on our right, and there certainly appear to be steps to enter the train on our left. If you recognise the trains, and knew how high its doors are, and if the floor of the carriage is at the same height as the platform, then you could make a half decent guess.
The issue with the station is that, while we can ascertain where the horizon is, we don't have much information to assess the height of the camera. It doesn't matter which way the camera is orientated, so long as the horizon is within its field of view. Doc, it is the height of the camera above the ground that matters, which usually tends to be at an average person's eye line, because that's how cameras are usually used.