Tongyong Pinyin
"Tongyong Pinyin" was made the official system in an administrative order that allowed its adoption by local governments to be voluntary. Locales in Kaohsiung, Tainan and other areas use romanizations derived from Tongyong Pinyin for some district and street names. A few localities with governments controlled by the KMT, most notably Taipei, Hsinchu, and Kinmen County, overrode the order and converted to "Hanyu Pinyin" before the January 1, 2009 national-level decision, though with a slightly different capitalization convention than mainland China. Most areas of Taiwan adopted Tongyong Pinyin, consistent with the national policy. Today, many street signs in Taiwan are using "Tongyong Pinyin"-derived romanizations, but some, especially in northern Taiwan, display "Hanyu Pinyin"-derived romanizations. It is not unusual to see spellings on street signs and buildings derived from the older Wade–Giles, MPS2 and other systems.