Anon, is it possible we have a "clockface" in the SV image? We must look at the possibility our yellow bike owner could be a regular bike commuter and parks their bike their on regular occasion. The mere fact it is a privately owned bike presents that its owner is likely a local? Or local enuf to commute to work by bike.
We do have the bike appearing in night and day pics. This leads one away from it being a one off. Altho, the bike could have been left near the train station to go on a weekend. Gonna need to go back and look at old pics and vids on that I think.
Oh, almost forgot. Anon, see the traffic cones staged for traffic control of some event. Upcoming or past? Possible clockface if yellow bike is a single occasion. Those cones, if placed a couple of days before an event, could narrow the yellow biker on holiday possibility/theory.
And see those board signs stacked behind the cones. Could just be arrow signs or some other.