We're still very interested in an online trail database and I think an algorithm like TF's network code is essential. We are continuing to improve the network code which will hopefully see a beta test in the coming weeks.
But, we haven't looked into the infrastructure (web interface, database) side of things. We really need a partner (and I think there are plenty of others interested in this) to help.
You might want to check out
trailregistry.
Geoff has a nice online map interface as well as the infrastructure to manage tracks. He uses some hacks to figure out where trails intersect and he cannot handle overlapping tracks, unfortunately.
I'd like to see something along these lines, but using TF's network code.
The Tucson Mountain Park project is about creating a database of GPS tracks in a single area. The goal is not so much to map out every trail (I've already got them all, or at least all that I know of). We'd like to know what types of use are going on in the park and where people are going. Hopefully I'll be rounding up some more volunteers this winter.
