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- Path: sparky!uunet!destroyer!cs.ubc.ca!cascade.cs.ubc.ca!not-for-mail
- From: pope@cs.ubc.ca (Art Pope)
- Newsgroups: talk.environment
- Subject: Re: Real CAFE Standards
- Date: 27 Jan 1993 15:10:47 -0800
- Organization: Computer Science, University of B.C., Vancouver, B.C., Canada
- Lines: 24
- Message-ID: <1k74pnINNei1@cascade.cs.ubc.ca>
- References: <1k0jqhINN66b@uwm.edu> <6576@balrog.ctron.com>
- NNTP-Posting-Host: cascade.cs.ubc.ca
-
- As of 1991 (and I believe this is still true today) separate CAFE standards
- applied to cars (27.5 mpg) and light trucks (20.2 mpg). There has been
- little improvement in the fuel efficiency of the in-use fleet since the
- mid-80's because
- (a) consumer preference has shifted toward light trucks,
- (b) technological improvements have been used to achieve better
- performance (acceleration) rather than better fuel efficiency,
- (c) there is increased demand for vehicle options that reduce
- fuel economy (e.g., air conditioning), and
- (d) the population as a whole is aging, and older people generally purchase
- larger cars
-
- A good analysis of present and attainable CAFE standards can be found in a
- report from a National Research Council panel, "Automobile Fuel Economy:
- How Far Should We Go?", National Academy Press, Washington, D.C., 1992.
- They found that, by model year 2006, fuel efficiencies of 23 mpg (for large
- pickup trucks) to 39 mpg (subcompacts) could be achieved with high
- confidence. With somewhat lower confidence, perhaps 25 mpg (large pickups)
- to 44 mpg (subcompacts) could be achieved. (All this while complying with
- existing safety and other standards, achieving reasonable manufacturing
- economy, and using only techologies already in use for mass producing
- vehicles somewhere in the world.)
-
- ...Art Pope, Univ. of British Columbia Dept. of Computer Science
-