
These milk containers are embedded in the concrete in front of the main station. I'm not sure what it's supposed to mean...
Bern blogger
This said, in a comment to this post, that it's an art installation by Ueli Berger called "Hommage to Milk Lane". The canisters embedded in the asphalt mark the location of a small street called Milchgässli. Milk Lane was done away with when the railway station was upgraded. And according to a German-language
newspaper article, it was the place where people were picked up and dropped off. Thanks, This, interesting explanation - I thought it was just random.