CaliforniaMan
Full time employment: Posting here.
I always get an international driving permit. It only lasts a year, but it's not expensive.
However, I've never actually needed to use it. I use my US driver's license and it's never been an issue. But then again, I've never been pulled over or in an accident. I figure for the potential to ruin a day, for $20 it's cheap insurance. I'd hate to run across the official that wasn't happy with only my US license.
And officially, many of the places I visit require an international drivers permit. So it's my fault if I don't have it, even though nobody has asked for it (yet).
I will get an international permit at the Auto Club, they just give some translations of what is on your license, but better to have it than not.
Some time ago I was pulled over for speeding in Turkey (I was not going fast, but I guess over the posted limit). Those flashing red lights in the rear view mirror had me a bit worried, had never been pulled over in a foreign country before.
I pulled over and the officer came up to the window, he said something, I don't really know what it was since I don't speak Turkish, but I gave him my California drivers license. They seemed to be a bit perplexed and curious about what it was, maybe they didn't realize that in the U.S. it is the states that issue licenses. I had my passport with me, in case they asked me, but wanted to see what they would do with the license first.
After a short while he came back to my window and it was clear to me I was going too fast and that I had to pay them a fine. They told me the amount, but not knowing the language (only a few words) or understanding the money (a lot of zeros), I gave them what turned out to be 1/10 of what I owed. They looked at me kind of puzzled, but I guess then realized that I was not trying to be difficult, was just a stupid American tourist.
Luckily I had enough cash with me and paid the fine right then and there, for which they gave me an official looking receipt.
So from now on when I drive a car in a foreign country, I will have an international license, and enough cash.