A lot of Tsukuba University students (used to) dump their bicycles at the end of their university days at the north end of the university.
It's quite common to see discarded bicycles on the streets. They're invariably broken, sometimes with little more than a flat tire.
Some trucks come round taking away bicycles for recycling. They usually only take adult bicycles.
Passing them onEdit
You might find someone on Taira who will take your bicycle or buy it.
The recycle hiroba used to collect bicycles, but I'm not sure if they still do.