Provincial Highway 1 (Taiwan)

Provincial Highway 1 is a -long Taiwanese provincial highway that starts in the north of the country near Taipei Main Station and ends in the south at Fangshan, Pingtung County. It intersects with Provincial Highway 9 and Provincial Highway 26. Before the freeway system was built in Taiwan, this was the primary north-south highway for the island. The highway connects most of the major cities in Taiwan. In most parts of Taiwan, the road is known as The North-South Highway.
Kilometre posts on the highway count south from Taipei.

Route Description

Provincial Highway 1 begins in front of Executive Yuan in Taipei. The highway follows Zhongxiao West Road in Taipei, and crosses into Sanchong, New Taipei City via Zhongxiao Bridge. The highway is known as Xinbei Blvd as it passes through Sanchong, Xinzhuang, and Taishan. PH 1 continues through Shulin and enters Taoyuan City.

In Taoyuan, PH1 passes through the most populated areas, including Guishan, Downtown Taoyuan, Bade, Zhongli, Pingzhen, and Yangmei. In downtown Taoyuan, PH1 runs concurrent with PH4. The highway continues to Hsinchu County, passing Hukou, Xinfeng, Zhubei before entering downtown Hsinchu City. PH 1 continues through Miaoli County, connecting the coastal townships of Zhunan, Toufen, Zaoqiao, Houlong, Xihu, Tongxiao, and Yuanli before entering Taichung City. The highway briefly runs concurrent with PH61 in Tongxiao, Miaoli.

In Taichung City, PH 1 is an important route connecting the coastal districts. The highway passes through the districts of Dajia, Qingshui, Wuqi, Longjing, and Dadu, before exiting the city in Wuri. The highway continues to Changhua County, Passing through Changhua City and the agricultural townships of Huatan and Dacun before entering downtown Yuanlin. From Yuanlin the highway continues through a number of rural townships, including Puxin, Yongjing, Tianwei, Beidou, Xizhou, and Pitou. The highway enters Xiluo in Yunlin County via Xizhou Bridge, passing through Zhuoshui River.

PH 1 in Yunlin county passes through Xiluo, Cihtong, Huwei, Dounan and Dapi before entering Chiayi County at Dalin. The highway continues through Xikou and Minxiong before entering Chiayi City. PH 1 then continues to Shuishang in Chiayi County before entering Tainan City. In Tainan City, the highway is one of the main roads that connect the major urban districts. The urban and rural districts served by PH 1 include Houbi, Xinying, Liouying, Lioujia, Guantian, Shanhua, Xinshi, and Yongkang. The highway then goes through the downtown Tainan City and Tainan Airport as Zhonghua Rd.

Entering Kaohsiung City, the highway passes through several rural and suburban districts, including Hunei, Lujhu, Gangshan, and Ciaotou, before entering central Kaohsiung City. In central Kaohsiung, PH 1 follows Minzu Rd. before turning to an east-west direction along Jiuru Rd. and Jianguo Rd. in Fengshan. The highway crosses through Gaoping River in Daliao and continues toward Pingtung City in Pingtung County. After bypassing downtown Pingtung City, the highway goes back to a north-south direction, passing through Linluo, Neipu, Zhutian, Chaozhou, Nanzhou, Xinpi, Jiadong, Fangliao, and ends at the intersection of PH 9 and PH 26 in Fangshan.

Special routes of Provincial Highway 1 use the same number, followed by a heavenly stem character. In English, these characters are replaced by letters in alphabetical order.

Highway 1A : This route is based on the old Highway 1 segment in Taipei and parts of Taoyuan. The road starts from the same intersection as Highway 1 in Taipei and ends in Taoyuan, with a brief concurrency with Highway 1 in Xinzhuang. The road passes through the downtown areas of Sanchong and Xinzhuang, while its parent route bypasses these areas. The sections in Sanchong and Xinzhuang follow Chongxing Rd and Zhongzheng Rd. The total length is.
Highway 1B : This route serves as a connecting route to central Taichung City for Highway 1. The road starts from the junction of PH 10 in Daya District and ends at the junction of the parent route in Dadu District, both within Taichung. The total length is.
Highway 1C : This route is an alternate route for Highway 1 and bypasses Changhua City. The total length is.
Highway 1D : This route connects Highway 1 from Citong to Douliu. It was a segment of Highway 1 until the highway was rerouted to a route bypassing Douliu. The total length is.
Highway 1E : This route connects downtown Kaohsiung, Fengshan, and Daliao. The road runs parallel to Highway 1, and is also previously a segment of the parent highway. The total length is.
Highway 1F : This route connects Provincial Highway 61, Freeway 3, and Highway 1 in Zhunan. The total length is.