That is based on a study performed several years ago (I think in the 1960s)
which involved driving trucks around a track made of various pavement
types. The study indicated that road wear increases with the fourth power
of vehicle axle weight, although subsequent analysis of the data showed it
really increases by the 3.5 power (Kenneth A. Small, Clifford M. Winston,
and Carol A. Evans, Road Work: A New Highway Pricing and Investment Policy,
Brookings Institution Press, www.brookings.edu, 1989). The results were
incorporated in the various highway cost allocation studies (see FHWA, 1997
Federal Highway Cost Allocation Study, USDOT,
www.fhwa.dot.gov/policy/hcas/summary/index.htm, 1997).
Also see:
http://www.dft.gov.uk/stellent/groups/dft_roads/documents/page/dft_roads_506830.hcsp
Todd Litman, "Road Costs," Transportation Cost and Benefit Analysis,
Victoria Transport Policy Institute (http://www.vtpi.org/tca0506.pdf), 2004.
Best wishes,
-Todd Litman
At 10:51 AM 3/24/2004 +0100, Pascal Desmond wrote:
>Hello All
>
>Please can you respond to John Whitelegg <[log in to unmask]>
>
>Does anyone know of a reference to the work of AASHO on the impact of
>lorries on pavements/road surfaces which has been reported as saying
>that a lorry does as much damage as 100,000 cars? I have done a
>"google" and checked text books but the information I am looking for
>is not there. Can anyone help?
>
>Many thanks in anticipation
>
>Pascal Desmond
>
Sincerely,
Todd Litman, Director
Victoria Transport Policy Institute
"Efficiency - Equity - Clarity"
1250 Rudlin Street
Victoria, BC, V8V 3R7, Canada
Phone & Fax: 250-360-1560
Email: [log in to unmask]
Website: http://www.vtpi.org
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