Yeah, sounds like Africa too. I don't think this has anything to do with Brazil, rather undeveloped countries. The usual story of first-worlders thinking they know how the rest of the world works.

I don't think you get to claim cultural relativism on not putting up hazard signs. I'd also recommend against claiming cultural relativism on things like wheelchair accessibility, hard hats, fire and earthquake codes, or really 95% of the things covered by the Occupational Safety and Health Administration, the ADA, or similar entities. These are not things you should be proud of not having.

Not sure why you're shooting the messenger. I didn't applaud the hole in the road, or the lack of warning signs. I wasn't even commenting on those things, only that this is not exclusively Brazil. You can be as philosophical, logical, ideological as you like, in reality there is Africa time, etc, and you'll just have to get over it. ( https://en.wikipedia.org/wiki/African_time )

So this one time, friends and I were driving through mountains, on a decent ~2 lane road. With even some guard rails. And then we came around a switchback, and the road was basically just gone. No signs, or other warnings. There had been a huge landslide. And there were many workers, from nearby towns, but all with just hand implements. So we had to backtrack ~200 km.