For anyone that doesn't know, it's trivial to load OSM onto a Garmin GPS and use is for turn-by-turn navigation, for free.
I've used it in over 40 countries (including Africa, Europe, North America) and it is staggeringly complete and accurate. From the mega capital cities to the tiniest village, it has every single dirt track, school, hospital, gas station, roundabout, intersection, etc. etc.
I can count on one hand the number of times it hasn't been utterly perfect in 4 years of driving around 90,000 miles through 40 countries.
I have no idea how the maps can be so shockingly good in rural Ivory Coast or Burundi, but they are.
Interesting, like I said I've never seen a country that isn't shockingly good.
I travelled extensively in 35 African countries - including a bunch you wouldn't expect to get good data for like The DRC, Burundi, Sudan, Mali, Gambia, Djibouti, Ethiopia, etc. As well as Belgium, France, Spain, Canada, USA
I lived for one year in Cambodia. Major roads are mapped, so you can generally navigate, but lots of small streets and roads are missing. Also, even in the capital most of the buildings are not mapped. I've mapped a few buildings and streets but didn't have time to do a lot. Also, it's incredibly hard for a foreigner that doesn't know Khmer language.
Mongolia is poorly mapped on all maps, not just OSM. But OSM coverage was the poorest about one year ago. Don't know if it is improved since then.
I just drove 35,000 miles around the US this summer through about 30 states, and OSM had absolutely every single road, intersection and detail I could ever hope for perfectly mapped. I used it solely for navigation in a ton of places I've never been before, and it was brilliant.
I've used it in over 40 countries (including Africa, Europe, North America) and it is staggeringly complete and accurate. From the mega capital cities to the tiniest village, it has every single dirt track, school, hospital, gas station, roundabout, intersection, etc. etc.
I can count on one hand the number of times it hasn't been utterly perfect in 4 years of driving around 90,000 miles through 40 countries.
I have no idea how the maps can be so shockingly good in rural Ivory Coast or Burundi, but they are.