Danger Estimation with HIC and Risk Curve in Passengers Falls from Running Rail Cars

  • Nakagawa, Toshiko (Department of Electrical and Electronic Engineering, Tokyo City University)
  • Received : 2011.10.06
  • Accepted : 2011.12.15
  • Published : 2011.12.31

Abstract

In 2001, an independent official board was constituted in Japan to investigate aircraft and railway accidents. In the past 10 years, many accidents and serious incidents have been investigated and these official reports were published by the board, on which the author had sat for 9 years as boarding member. In the interim, there were several train disasters which mocked our trust in railways and also many apparent trivial incidents. In recent years, serious incidents, which a door of running rail cars opens suddenly with some trouble, happen 2 or 3 times in a year. For the past 10 years, such incidents have happened 14 times and 13 cases of them were closed by the board mentioned above. In these 13 cases, no one fell off the rail car, so that the death toll was none luckily. In this paper, these 13 serious incidents are picked up among all the reports published by the board and outlined using some tables. Especially, fall accidents of passengers are discussed mainly from the view point of impact force and duration time. Then, the equation of HIC (Head Injury Criteria) and the risk curves in terms of the HIC are dealt with properly.

Keywords

References

  1. ARAIC, RI2004-1, Ministry of Land, Infrastructure, Transport and Tourism, Oct. 2004.
  2. ARAIC, RI2007-1-1, Ministry of Land, Infrastructure, Transport and Tourism, Apr. 2007.
  3. ARAIC, RI2007-1-2, Ministry of Land, Infrastructure, Transport and Tourism, Apr. 2007.
  4. ARAIC, RI2008-2-2, Ministry of Land, Infrastructure, Transport and Tourism, Mar. 2008.
  5. ARAIC, RI2007-2-2, Ministry of Land, Infrastructure, Transport and Tourism, Sept. 2007.
  6. ARAIC, RI2008-1-1, Ministry of Land, Infrastructure, Transport and Tourism, Jan. 2008.
  7. JTSB, RI2009-2-2, Ministry of Land, Infrastructure, Transport and Tourism, Apr. 2009.
  8. JTSB, RI2009-1-1, Ministry of Land, Infrastructure, Transport and Tourism, Jan. 2009.
  9. JTSB, RI2009-4-2, Ministry of Land, Infrastructure, Transport and Tourism, Dec. 2009.
  10. JTSB, RI2010-1-1, Ministry of Land, Infrastructure, Transport and Tourism, June. 2010.
  11. JTSB, RI2010-2-1, Ministry of Land, Infrastructure, Transport and Tourism, Oct. 2010.
  12. JTSB, RI2010-2-2, Ministry of Land, Infrastructure, Transport and Tourism, Oct. 2010.
  13. JTSB, RI2011-2-1, Ministry of Land, Infrastructure, Transport and Tourism, June. 2011.
  14. Institution for Transport Policy Studies, Data book for Railway 2010, 2010, ISBN 978-4-903876-31-3
  15. Seki, Sakamoto, et al, Handbook of Human Tolerance Limitation, first ed. Asakura-press in Japan, 1990, ISBN 4-254-10086-8
  16. Richard G. Snyder, "State-of-the-Art: Human Impact Tolerance", SAE 700398, International Automotive Safety Conference Compendium, New York: Society of Automotive Engineers, May 1970.
  17. CPSC: Consumer Product Safety Commission, "Home Playground Safety Tips", CPSC-Document #323
  18. David R. Foust, et al., "Study of Human Impact Tolerance Using Investigations and Simulations of Free-Falls" SAE 770915, 1977