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.
Old 'third class' to go, and double decker trains to revolutionise travel.
Russian Railways chief Vladimir Yakunin says this traditional form of cheap travel is outdated.
The problem was between Ksenyevskaya and Kisliy Klyuch in the Trans Baikal region.
Answer: The Trans-Siberian Railway, according to international broadcaster CNN.