These are the source datasets I use for my highway mapping project, which are focused on better maps for emergency response in rural areas. Included are the US Forest Service Motor Vehicle Use Maps (MVUM), which is every road in a national forest. Many of these are remote jeep trails, but useful for wildland fire response, backcountry rescue, or recreation.
There are also the MVUM Trail Map , which is focused on roads only suitable for specialized off-road vehicles like an ATV. Since the raw vector data used for topographical maps is available to download, the highways and trails have been extracted from those vector files. The topographical data is very useful, as it matches the maps.
Each state has 2 main categories. Many boundaries, which are key to slicing large files into manageble pieces. The original datasets converted to GeoJson, but no changes to the data. And finally the datasets converted to OSM syntax so they can be conflated.
The conversion of data formats, including the final conflation is handled by the OSM Merge project. This is the software I maintain to support my emergency response mapping project. For areas I've had a chance to conflate, the results are in the conflated-out.osm and conflated-out.geojson. Also included are the Multipolygon task boundaries.
I'll add more states later once I've done sufficient validation of the entire process and workflow. Sometimes changes require all these files to be regenerated, which can take hours, so I'm just working with this set for now.
