A shout-out about the mentioned Open Route Service, which is IMO fantastic. I wrote a small mapping app to do navigation when we moved cross-continent a few ye

A shout-out about the mentioned Open Route Service, which is IMO fantastic. I wrote a small mapping app to do navigation when we moved cross-continent a few years back. I didn't want to have to worry about trying to pull map data over the Internet, since I wasn't certain that I would even have Internet during the journey. I whipped together a small app using map tile data from OSM (great project), got the directions in a usable format (GeoJSON) from Open Route Service (great project) and rendered the entire thing with OpenLayers (https://openlayers.org/ https://openlayers.org/), a JS library (great project). We had a USB GPS tracker¹ hooked to a laptop that tracked our route/position. Open Route Service also includes other things in the data that are nice, and given more time, probably worth taking advantage of. E.g., there was road grade information, which is nice when you're hauling your life behind you in a truck, since then I can tell my driver what to expect. (We also did occasionally use Google Maps on the phones, too. For some tasks, that was easier.) ¹hardware GPS is so much nicer than phone. Near instant fix, vs. both our phone's 30s to several minute fix times…