Sometimes I see new wiki users start creating some questionable redirect pages.
Tag:maxspeed=10 → Key:maxspeed (and for a number of other speeds)
Tag:admin_level=8 → Tag:boundary=administrative (and similar for other administrative levels)
Tag:oneway=yes → Key:oneway
Key:busway:left → Key:busway
and so on
Is there a policy for creating redirect pages on the wiki?
I believe they start being harmful when you have a list of blue links and you don’t know which points to an actual page and which points to the same page you are right now.
It could be argued that it can be useful to link busway:left=* to busway=*, though ideally there should be other way to link subkeys (but I don’t think there is another way right now).
I don’t think they are the main problem right now, so we can leave it aside while we look at tag pages.
I think that if a tag page (Tag:aaa=yyy), have only a simple redirect to the ‘key’ page as it’s content (#REDIRECT [[Key:aaa]]), it should be deleted.
(There might be exceptions for this rule, but right now I can’t think of one.)