Huge economic boost from upgrade to Baikal-Amur and Trans-Siberian lines.
Her partner survived but Russian Railways warn people to take more care close to busy railroads.
Russian Railways chief Vladimir Yakunin says this traditional form of cheap travel is outdated.
Japanese companies consider investment in railway extension via islands of Sakhalin and Hokkaido.
Wildfires ablaze early in year due to lack of snow, posing threat to railway in Russian Far East.
Answer: The Trans-Siberian Railway, according to international broadcaster CNN.
Two-thirds of Chinese side already completed, but delay in Russia prompts call from Kremlin to speed up work on other side.
33 hour journey between the capitals could be in place by 2020.
First cargo train on the final link of Amur-Yakutsk line in historic expansion of Siberia's great railways.