Everything about Transportation Safety In The United States totally explained
Transportation safety has steadily improved in the
United States for many decades. Between 1920 and 2000, the rate of fatal
automobile accidents per vehicle-
mile decreased by a factor of about 17. Except for a pause during the 1960s, progress in reducing fatal accidents has been steady. Safety for other types of U.S.
passenger transportation has also improved substantially, but long-term
statistical data are not as readily available.
Information here: http://www.volpe.dot.gov/infosrc/journal/2005/pdfs/vj05intro.pdf
does not agree with the above chart. The chart of accident fatalities per 100 million vehicle miles in this government source shows that rates dropped steeply until 1990 and have been basically flat since then.
While the number of accidents increased in the last year, the population of the United States has also continued to increase.
Following an approach used by several writers, one can compare the
likelihood of a fatal accident
while driving and
while flying with a scheduled
airline. This is most meaningful for trips in which either mode of
transportation is a reasonable alternative. For the U.S., a typical trip of this sort is from the
Boston, MA, area to the
Washington, DC, area, about 6 hours door-to-door by
air travel and 7 hours door-to-door by
automobile. To compare typical
risks, one can use the U.S. average fatal
automobile accident rate of 1.5 per 100 million vehicle-
miles for 2000 and the U.S. average fatal scheduled
airline accident rate of 0.18 per million flight segments for 1995-2005:
Risk estimation By air By auto
Flight segments 1 0
Risk (millionths) 0.2 0
Miles driven 40 450
Risk (millionths) 0.6 6.8
Total risk (millionths) 0.8 6.8
The
likelihood of a fatal accident, estimated for this trip in this way, is about eight times greater when driving than when flying. As shown in this case, the largest part of the risk of flying is often the risk incurred driving to and from airports.
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