city bus GIS

Let's say I want to make a Central Taiwan bus web GIS to compliment my
Central Taiwan bus wiki, http://taizhongbus.jidanni.org/

The bus companies and governments are willing to give me the data,
so what Free Software would you recommend to make a lean clean web
bus route lookup system, where even GNU/Linux browsing users would not
be at any disadvantage, etc.?

I am planning on buying
http://www.oreilly.com/catalog/webmapping/
http://www.oreilly.com/catalog/mappinghks/
so maybe the answer lies in there anyway.

I suppose the http://fwtools.maptools.org/ components will be
involved. OK, I will learn them here on Debian sid.

P.S., WikiMedia is a good match for route/bus stop lists
http://jidanni.org/comp/wiki/article-category.html