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-Siberian Railway USA and Russia's Pacific ports unmolested. This contrasted with Germany and Britain's behaviour; their navies would destroy or capture neutrals' ships sailing to their respective adversaries. As a result, the Pacific Route – involving crossing the northern Pacific Ocean and the Trans-Siberian Railway – became the safest connection between the USA and the USSR. Accordingly, it accounted for as much freight as the two other routes (North Atlantic–Arctic and Iranian) combined, though cargoes were limited to raw materials and non-military goods (locomotives, clothing, foodstuffs etc.). From 1941–42 the railway also played an important role in relocating Soviet industries from European