[everdev]

Some of this is propagation of cultural myths/stereotypes. In a country of millions of people there will be millions of people that don't conform to these blanket statements.

In the US, states and cities have their own driving stereotypes that don't fit neatly into an easily summarized national driving style.

[mmjaa]

In my case, direct experience with the driving conditions of all three countries, over a decade. ;P