Trans-Siberian Railway one side of the lake to the other until the completion of the Lake Baikal spur along the southern edge of the lake. With the Amur River Line north of the Chinese border being completed in 1916, there was a continuous railway from Petrograd to Vladivostok that remains to this day the world's longest railway line. Electrification of the line, begun in 1929 and completed in 2002, allowed a doubling of train weights to 6,000 tonnes. There were expectations upon electrification that it would increase rail traffic on the line by 40 percent. The additional Chinese Eastern Railway was constructed
Trans-Mongolian Railway Trans-Mongolian Railway The Trans-Mongolian Railway follows an ancient tea-caravan route from China to Russia and connects Ulan-Ude, on the Trans-Baikal (Trans-Siberian) railway in Russia, with the Chinese city of Jining, by way of Ulaanbaatar in Mongolia. Other important stops are Sükhbaatar, Darkhan, Choir, and Zamyn-Üüd/Erenhot (border crossing and gauge-changing station). The line was built between 1949 and 1961. In most of Mongolia, it is single track, and in China double track. The gauge is in Russia and Mongolia and in China. There are important branches leading to Erdenet and Baganuur. Railway development came late to Mongolia. Construction of the Trans-Mongolian