Sun Moon Lake
The highway is a part of Fengpu Highway (豐埔公路) that runs from Fengyuan to Puli. The segment from Puli to Sun Moon Lake is a part of Zhongtan Highway (中潭公路), which connects downtown Taichung with the lake. The segment from Sun Moon Lake to Tataka is a part of the unfinished New Central Cross-Island Highway (新中橫公路). The cross-island highway plan was formally abandoned due to environmental concerns.