How to survive Tokyo's subway sandwich  Story highlights    • 24
million passengers use the Tokyo rail and subway network every
day   • Rush hour periods can be overwhelming and exhausting
experiences for the uninitiated   • CNN speaks to freelance
writer and Tokyo resident, Sandra Barron on how to traverse the
Tokyo subway  Japan is known the world over for its supreme
train network. In the capital Tokyo, nearly half of all
commuters travel by train, heavily outweighing other modes of
transport like cycling, buses and private transport.  Of the 48%
of people who use the public rail network, 22% use the city's
vast subway network.  Sandra Barron is an American freelance
writer who has lived in Tokyo for the last five years. Having
spent the previous 10 years in New York, she is a seasoned
subway rider. But nothing could have prepared her for the
congested world of the Tokyo subway.  Subway sandwich  "The peak
rush hour is really unbelievable. I've only been a few times and
I've really made an effort to avoid