From South:
A. Freeway 1 – Exit at Dounan interchange – Douliou (connect to Provincial Highway 3) – Sun Moon Lake (about 56 kilometers)
B. Freeway 3 – Exit at Mingjian interchange – Jiji (connect to Provincial Highway 3 and turn onto Provincial Highway 16) – Shueili (connect to Provincial Highway 16) – Sun Moon Lake (about 21 kilometers)

From North:
A. Freeway 1 – Exit at Taichunggang interchange – Provincial Highway 74 (Chung-Chang Expressway) – Provincial Highway 14 – Caotun – Puli (connect to Provincial Highway 21), Yuchih – Sun Moon Lake
B. Freeway 1 – Exit at Wangtian interchange – Provincial Highway 14 – Caotun – Puli (connect to Provincial Highway 21) – Yuchih – Sun Moon lake
C. Freeway 3 – Exit at Caotun interchange – Caotun – Puli (connect to Provincial Highway 21) – Yuchih – Sun Moon Lake