《土木与环境工程》（英文版） Tables and Figures

Air Safety: End of the golden Age? Tables and Fi Table 1: Passenger Mortality risk for Various World-wide jet Services, 1990-1999 Type of service Death Risk per Flight First-World Domestic 1 in 13 million International within First World 1 in 6 million nternational between first and lin500.000 Developing world Within Developing-World lin500.000 Countries identified as First-World are listed in the text Death risk per flight is the chance of being killed on a randomly-chosen(nonstop) flight over the period 1990-99 e approximations attend the calculations, and the denominators are rounded off to the nearest half million. The mortality-risk difference between domestic and intemational flights in the first-world is not statistically significant: If major fatal crashes arise under a Poisson process at rate i per million flights, then the observed difference is consistent with short-term fluctuations around the mean of that process. However, the fact that ar observed difference might be construed as a temporary fluctuation does not mean that it must be so construe

Air Safety: End of the Golden Age? Tables and Figures Table 1: Passenger Mortality Risk for Various World-wide Jet Services, 1990-1999 Type of Service Death Risk per Flight First-World Domestic 1 in 13 million International Within First World 1 in 6 million International Between First and Developing World 1 in 500,000 Within Developing-World 1 in 500,000 Notes: Countries identified as First-World are listed in the text. Death risk per flight is the chance of being killed on a randomly-chosen (nonstop) flight over the period 1990-99. Some approximations attend the calculations, and the denominators are rounded off to the nearest half million. The mortality-risk difference between domestic and international flights in the first-world is not statistically significant: If major fatal crashes arise under a Poisson process at rate
per million flights, then the observed difference is consistent with short-term fluctuations around the mean of that process. However, the fact that an observed difference might be construed as a temporary fluctuation does not mean that it must be so construed

First-World Jet Services, 1990-1999g from CriminalTerrorist Acts, Scheduled Table 2: Passenger Mortality risk aris Type of Service Death Risk per Flight US Domestic 0 International First-World outside us Domestic 0 International 1 in 2 billion Table 3: Passenger Mortality risk arising from Runway Collisions for Scheduled First-World Jet Services

Table 2: Passenger Mortality Risk Arising from Criminal/Terrorist Acts, Scheduled First-World Jet Services, 1990-1999 Type of Service Death Risk per Flight US: Domestic 0 International 0 First-World Outside US: Domestic 0 International 1 in 2 billion Table 3: Passenger Mortality Risk Arising from Runway Collisions for Scheduled First-World Jet Services

1990-1999 Type of service Death Risk per Flight Domestic I in 100 million International First-World Outside US: Domestic International

1990-1999 Type of Service Death Risk per Flight US: Domestic 1 in 100 million International 0 First-World Outside US: Domestic 0 International 0

Table 4: Passenger Mortality Risk Arising from Mid-air Collisions, Scheduled First World Jet Services. 1990-1999 ype or service Death Risk per Flight 0 International First-World outside us Domestic 0 International E Figure 1: By Replacing Indirect Prescribed Routings with Straight-Line Paths, Free Flight Would Keep Some Planes Further Apart

Table 4: Passenger Mortality Risk Arising from Mid-air Collisions, Scheduled First￾World Jet Services, 1990-1999 Type of Service Death Risk per Flight US: Domestic 0 International 0 First-World Outside US: Domestic 0 International 0 A B E F D C Figure 1: By Replacing Indirect Prescribed Routings with Straight-Line Paths, Free Flight Would Keep Some Planes Further Apart