National Highway 3 12 starts in Shanghai and ends in Horgos, Yili Autonomous Prefecture. Passing through Shanghai, Jiangsu, Anhui, Henan, Shaanxi, Ningxia, Gansu and Xinjiang, 30 cities and states in * * * are:

Shanghai, Suzhou, Wuxi, Changzhou, Zhenjiang, Nanjing, Chuzhou, Hefei, Lu 'an, xinyang, Nanyang, Shangluo, Xi 'an, Xianyang, Pingliang, Baiyin, Dingxi, Lanzhou, Wuwei, Jinchang, Zhangye, Jiuquan, Jiayuguan, Hami, Turpan and Urumqi.

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National Highway 3 12 is known as "the first road in China". At 8: 00 am on July 12, with the eight lanes of the National Highway 3 12 toll station erected together, dozens of vehicles, large and small, parked on both sides of the toll station for a long time filed past, which marked the official parking of the National Highway 3 12 toll station.

According to the regulations, toll stations with a distance of less than 50km, such as National Highway 3 12 Nanjing Toll Station, Luoshe Toll Station (including Yanqiao Toll Station), Xilin Toll Station, Jinjihu Toll Station of Su Hu Airport Road, Jiangyin Toll Station of Jiang Yan Highway, Wang Jiang Toll Station of Ningyang First Class Highway, G204 Liu Zhuang Toll Station, G204 Shizhuang Toll Station and S323 Pizhou Canal Bridge Toll Station, stopped charging and began to withdraw their stations.

Reference source: Baidu Encyclopedia -3 12 National Highway