home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky sci.energy:7300 talk.environment:5796
- Path: sparky!uunet!think.com!spool.mu.edu!agate!darkstar.UCSC.EDU!darkstar!steinly
- From: steinly@topaz.ucsc.edu (Steinn Sigurdsson)
- Newsgroups: sci.energy,talk.environment
- Subject: Re: Definition of "Short Trip"
- Date: 27 Jan 93 12:35:50
- Organization: Lick Observatory/UCO
- Lines: 43
- Message-ID: <STEINLY.93Jan27123550@topaz.ucsc.edu>
- References: <1993Jan15.072734.11941@organpipe.uug.arizona.edu>
- <1993Jan17.172955.12468@ke4zv.uucp> <Jym.24Jan1993.1807@naughty-peahen>
- <1993Jan27.154945.15317@ke4zv.uucp>
- NNTP-Posting-Host: topaz.ucsc.edu
- In-reply-to: gary@ke4zv.uucp's message of Wed, 27 Jan 1993 15:49:45 GMT
-
- In article <1993Jan27.154945.15317@ke4zv.uucp> gary@ke4zv.uucp (Gary Coffman) writes:
-
- In article <Jym.24Jan1993.1807@naughty-peahen> Jym Dyer <jym@mica.berkeley.edu> writes:
- >>> Some how the concept of SHORT TRIPS has been disregarded
- >>> or possibly there is a definition of short trip that I am
- >>> not familiar with.
- >> Short trip: any trip that can be completed on one tank of
- >> gas or less.
- >
- >=o= Well, that may be "a definition," but it's certainly not
- >a useful one. Unless there's a definition of "useful" that
- >I am not familiar with.
- >
- >=o= Given that most auto trips are on the order of 6 miles
- >or less, perhaps one could use "6 miles or less" as a useful
- >definition of "short trip."
- > <_Jym_>
-
-
- One *could* say that if one accepted as given that most auto
- trips are of the order of 6 miles. But since that is incorrect,
- the statement would be incorrect. The average miles driven per
- auto per year in the US is roughly 12,000. That leads to an average
- daily travel of about 33 miles. As an example, I drive about 60 miles
- a day in two 30 mile trips. I'm above the national average and
- there are those below the average, but 6 miles is *way* below
- the average.
-
- doesn't follow Gary. How many "trips" per day does the average
- auto make?
- Also, even though the mean is 33m/d that does not mean that
- _most_ trips are near the mean, the distribution is probably
- quite skewed - for example for a while my mean daily travel
- was dominated by occasional trips of few hundred miles
- while my modal trip was under five miles.
-
- * Steinn Sigurdsson Lick Observatory *
- * steinly@lick.ucsc.edu "standard disclaimer" *
- * I know people whose idea of fun *
- * Is throwing stones in the river in the afternoon sun *
- * Oh let me be as free as them *
- * - BB 1986 *
-
-