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- Newsgroups: rec.autos
- Path: sparky!uunet!spsgate!mogate!newsgate!wdc!mark
- From: mark@wdcwdc.sps.mot.com (Mark Shaw)
- Subject: Re: Vehicle size vs. safety (was: Crash Test Info ... )
- Message-ID: <1993Jan21.184749.20049@newsgate.sps.mot.com>
- Sender: mark@wdc (Mark Shaw)
- Nntp-Posting-Host: 223.199.55.11
- Organization: Motorola Western MCU Design Center, Chandler Arizona
- References: <1993Jan18.210534.5984@pcx.ncd.com> <96654@rphroy.ph.gmr.com> <1993Jan20.194240.9187@newsgate.sps.mot.com> <1993Jan21.003725.28094@tandem.com>
- Date: Thu, 21 Jan 1993 18:47:49 GMT
- Lines: 48
-
- In article <1993Jan21.003725.28094@tandem.com>, norcott_bill@tandem.com (Bill Norcott) writes:
- |> In article <1993Jan20.194240.9187@newsgate.sps.mot.com>, mark@wdcwdc.sps.mot.com (Mark Shaw) writes:
- |> |> What does the data say about accident rates for large and small vehicles
- |> |> normalized for age of driver?
- |>
- |> I interpret the posting to mean that given that an accident has
- |> occurred, the driver of the big car is 2.8X less likely to die in
- |> the accident. It does not seem to address rates of occurrence of
- |> accidents.
- |>
- |> If we are talking about accident rates, what do you presume is the
- |> correlation between size of car and age of driver, and what does this
- |> have to do with accident rates.
-
- There are a number of factors that are left out of the simple "2.8 times
- more likely to die in a small car" conclusion. The types and speeds of
- accidents have a significant factor on survival.
-
- If most of the large car accidents involve single car incidents at low
- speed (a typical elderly driver scenario in Arizona) and most of the
- small cars are driven by young drivers at high speed then the data will
- be skewed.
-
- What most of these studies do is evaluate the total recorded accidents
- and try to find some trend. What really must be done is to categorize
- each type of accident and only draw conclusions by accident type. There
- is no argument that running head on into a large car with a smaller one
- has a predetermined bias against the small car, but for other types
- of accidents at various speeds, impact angles, and objects the results
- are not so obvious. One of the people in our car club was hit in the
- side of his Corvette by a Geo Metro and the Corvette was almost totally
- demolished.
-
- Another factor in the small car safety debate is the basic presumption
- that everyone will have an equal change of being in a accident. What I
- have always wanted to see was an analysis of probability of an accident
- versus car size for a given age group. I can recall at least one
- incident in recent months where I avoided a chain reaction impact in heavy
- traffic solely because I was able to fit in between the car ahead of me
- and the freeway barrier wall. If I had been a foot or two wider, there
- would have been a chain reaction impact with the car ahead and the car
- behind.
-
- The worst thing that Ralph Nader (and others to follow) has been to
- redefine safety as being survivability in the absence of any personal
- action.
-
- Mark
-