Trackhub is right. The US could definatley learn a bit about commuting from Europe -and Denmark and Holland in particular (I am though biased
).
A good place to start would be the
Danish Traffic Ministry . Here you can find (among other things) a 34 page pdf-file (in English at the lower-left of your screen) describing the 11,500 kilometers of bicycle trails which criss-cross the 43,094 sq km country.
I am also in agreement with Roody's comment on the advantages of MUPs. The majority of my 21 km commute to work is on a segregated bike path and I think that this type of solution is one of the primary reasons the Danes cycle as much as they do. If I find some more "authentic" cycling info from the Traffic Ministry in English, I'll be sure to post it here.
Good luck with your project Niten, that's really exciting!