Changhua City
Provincial Highway 19 (PH 19, ) is a north–south highway from Changhua City in Changhua County to Yongkang in Tainan City. The highway is known as Central Highway (中央公路). The highway lies between the coastal PH 17 and the inland PH 1 which serves many of the major cities in central and southern Taiwan. The total length of the highway is .