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MEASURING IMPROVEMENTS IN THE MOVEMENT OF - page 37 / 60

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Measuring Improvements in the Movement of Highway and Intermodal Freight

REPORT: The Productivity Effects of Truck Size and Weight Policies

SPONSORS: U.S. Department of Transportation, Federal Highway Administration (FHWA)

AUTHORS: David Middendorf and Michael Bronzini, Oak Ridge National Laboratory

PARTICIPANTS: N/A

DATE: November 1994

SUMMARY:

The report is concerned with the effect on transportation productivity of allowing longer and/or heavier trucks.  Productivity is measured in terms of transportation costs plus logistics costs, with transit time, inventory levels, etc., included in the latter category.  It is not concerned with the performance of the highway system as such.

PERFORMANCE MEASURES PRESENTED:

As noted, the study used transportation cost, to the shipper, plus logistics costs, for analyzing the effects of various policy options.

ASSESSMENT:

These are sensible measures of freight-service performance from the point of view of shippers.  The problem is linking these measures specifically to the highway system.  The report notes that there are major problems in securing data on logistics costs, because firms do not want to divulge such information for fear it will reach their competitors.

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