屏東市
The highway begins at downtown Pingtung City at the intersection with Highway 3. The highway continues eastbound towards Changzhi, where it meets Freeway 3. The road continues toward the mountains, passing through Yanpu, Neipu, Sandimen, and ends at Wutai. A stretch of the highway in Wutai was severely damaged by Typhoon Morakot in 2009 and was closed to traffic ever since.