Actually, if you look at street signs in Taiwan you'll see that the use multiple Romanization systems, often in the same city! I think it was in Kaohsiung that

Actually, if you look at street signs in Taiwan you'll see that the use multiple Romanization systems, often in the same city! I think it was in Kaohsiung that I saw the same character Romanized two different ways on two different streets. I'm not sure, but I think they're using some combination of Pinyin, Wade-Giles, and possibly something else. Even worse, I think some of the Romanizations used in Taiwan are just made up on the spot. My wife's name should be written "Hui Ling" in Pinyin, but for some reason her English teacher in Taiwan (who was Taiwanese) told her to write it as "Huey-Ling". So now we get phone calls asking for "Huey" all the time.