Energy and labor intensities projected to the year 2010. [For a 40-sector economy] Page: 27 of 163
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Changes in the technology of transport vehicles engines affect energy
rCquirenents per vehicle-mile for all modes. The number of passenger-miles
or ton-miles per vehicle-mile depends on load factor. Both types of changes
combine ultiplicativoly to determine the change in motor fuel inputs per
unit Output,
In the non-transportation sectors, most motor fuel use is for trucking.
The relative efficiency factors for tzncks determined by the Transportation
Resource Croup were (.683, .728, .799. .837) for vehicle energy intensities,
and (.833, .938, 1.071, 1.250) for load factor changes. The net effects are
therefore (.569, .683, .834, .1046) for motive power used in non-transportation
sectors and in the trucking sector.
For bus transportation, we assume the same vehicle efficiency changes
as for tncks1 rAnd the following changes due to load factor improvements
(.50, .60, .75, 1.fl).t The net change factors are therefore (.42, .437,
.584, .837).
For rail transport, braking system improvements are assumed to yield
40% energy savings directly. No freight load factor changes are assumed
and passerger transit is ignored in all scenarios,
For air transport, the vehicle energy intensity factors are (.661, .694,
.728, .768) and the effects due to load factor are (.741, .820, .A17,
1.042) for a total change of (.490, ,569, .668, ,800).
For water transport, the same vehicle efficiency changes are assumed
as for trucks and buses, and lead factors remain unchanged.
*Friedland (1976) supplied information for extending the Trapisportation
Resource Group results to busos and barges, and for interpolating
bctvcen t 1 c R : Li 1-h 21 rid 1n. :-7 c r : ar .17
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Hannon, B & Pleszkun, A R. Energy and labor intensities projected to the year 2010. [For a 40-sector economy], report, September 1, 1978; Urbana, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1210641/m1/27/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.