[OSM-newbies] Splitting streets into one ways--too much?

[Kenneth Pardue]

I'm working in my local area using the new Bing imagery.  It really allows me to see much greater detail and to add that to OSM.  There are a number of residential streets in my locale that are separated by a median.  Traditionally, I've converted such streets into two one way lanes.  Of course this is particularly useful in areas like interstates or large highways, but I'm wondering if I'm taking it too far by doing it to the residential streets in my area?  At what point is an effort for absolute accuracy go to far? 

See the area, and my edits, here: http://www.openstreetmap.org/?lat=31.27966&lon=-92.48732&zoom=17&layers=M