mango314
commented
8 years ago @DruidSmith I am writing just to acknowledge your post and I am not 100% sure how to answer this question. It's possible you know about GIS than me. But here goes...
Puerto Rico has its own unique naming system which may not always be compatible with the US. Carretera Estatal 1 KM 17.2 that is the * official * address of one of the tax bureaus here in San Juan - which can be very confusing to outsiders.
The Hackathon was almost a year ago, but I do recall the roads being made of disconnected segments and there being ambiguity in how to place the roads together. For example PR-1, PR-2 and PR-3 which are called various named along their route and are not connected.
Rumor is that Google maps is not 100% accurate in this regard either :-)
The data.pr.gov has a clunky version of this data set -- probably the one I scraped from the US roads dataset https://data.pr.gov/Transportaci-n/Carreteras-de-PR/icv9-n44d
One of the other big challenges I've seen is that after getting roads data loaded, is that a lot of locations in Puerto Rico are listed by linear reference along the highway, for example "Carr 150 KM 12.3" - and it would be good to know if there are any sources that can provide more info that can make those references more useful. I've found that in some cases they also reference Barrio or other geography which can be referenced via Census TIGER 'Place' layers, in some cases the highway of interest might only cross a small part of the barrio, which helps to tie it down. Ultimately, having a better way to tie road segments and KM posts together might help for geocoding and navigation apps.