Originally Posted by
nrgiii
More of a pet peeve than a chip.
Yes it is as a courtesy, but typically not by taxi drivers. What drives me nuts is the expectation of some Americans that USD be accepted everywhere.
If the OP was a "typical" American and assumed that USD would be automatically accepted then the OP would not have even bothered posting this question.
At least he was aware of the possibility of not being able to USD and therefore asked.
When I travel abroad, I always make sure I have some USD cash on me for emergencies.