[piva00]

> I mean turn signals work great (oh wait no one uses them)

That's a very culture-dependent thing, it's much more unusual for me to see someone not using turn signals in Sweden than it is in the USA or Brazil. If no one around you uses them I'd blame driving licence requirements, enforcement, and training for it.

[JohnFen]

Even in the US, there are large regional differences. In my part of the US, people use their turns signals probably 80-90% of the time, but I've been in several parts of the US where they don't.

OTOH, there are other bad driving habits that more common where I am than in many other places, such as running red lights.