^Uh?
Driver sits on the right, cars drive on the left lane, gears on the left: UK, Australia, Japan for sure. Don't know about India or Pakistan or other former UK colonies and protectorates in Asia, Africa, Pacific islands.

More or less everywhere in the world and all of Europe but UK: driver sits on the left, cars drive on the right lane, gears on the right of the driver.

Update: look at this nice map. It's actually more than 90% of the world :)

Actually it's about 60% - 40%.

http://askville.amazon.com/countries-steering-wheel-right-hand-side-left-hand/AnswerViewer.do?requestId=163350

This article says 66% and 34%, but not all countries that drive on the right sit on the left. ( You have to look at each country ).

But all countries that drive on the left sit on the right.

So no, it's nowhere near 90%. :)

^I stand corrected, so many small countries... In Europe it's only UK and Malta, though.

Btw, where in the world does the driver sit on the same side of the traffic lane? That sounds really a bad choice for visibility.

It was stated in one of the posts on the forum. I cant be arsed to look at each country to find the odd 6%. So we'll just leave it at 66 - 34. :)

Be it 10% or 34%, it's quite a half-arsed way to drive tho.