... and I don't just mean which country or state. Anecdotally, pass rates... for road tests anyway... tend to be a lot higher in rural areas, it's easier to practice with lots more empty road and friends with cars. Also I don't think the parallel parking part gets held to quite as strictly in places where their might be all of ten such parking places in the whole county

I wouldn't be surprised if there was an unofficial and unspoken policy of holding city drivers to a higher standard, with the greater dangers and lesser need, but if nothing else the fail rate would be higher from the lower opportunity to practice. Almost everyone I know who's failed a driver's test was an urban-dweller, and I'd never met anyone - who told me -of failing one till I was regularly interacting with people who came from cities.