00624758

Component

http://onlinepubs.trb.org...trr/1992/1333/1333-004.pdf

https://scholar.google.co...tock&publication_year=1992

Because data on truck movements of specific hazardous chemicals are not available, methods for estimating them are needed. One possible method of collecting data is through surveying or reporting movements by truckers or shippers. A less costly alternative is to use secondary data on production and consumption of chemicals to identify the chemicals that are moving, the probable origin-destination pairs of these movements, and the probable routes taken. An approach that relies chiefly on secondary data is developed. The basic data on production and consumption came from available data bases on chemicals and chemical producers in the United States. These data were used to determine the chemicals that account for at least 80% by volume of hazardous chemicals moving by truck in the United States and to identify major producers and consumers of each chemical. Through interviews with these producers and consumers, rules were developed for estimating the modal split among truck, rail, and water transport on a chemical-by-chemical basis. A gravity model was applied to estimate the origin-destination pairs and routes for truck shipments. A description of the approach and the results of its application to three large-volume hazardous chemicals are presented.

This paper appears in Transportation Research Record No. 1333, Marine and Intermodal Transportation: Freight Movement and Environmental Issues. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01407209

English

p. 21-29

1992

Transportation Research Record

030905172X

References (5) ; Tables (8)

Consumption; Data collection; Gravity models; Hazardous chemicals; Modal split; Origin and destination; Production; Route choice; Trucking

Freight Transportation; Highways; Motor Carriers; Planning and Forecasting; Safety and Human Factors; I72: Traffic and Transport Planning

TRIS, TRB, ATRI

Aug 3 1993 12:00AM

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