01023738

Component

http://onlinepubs.trb.org...nepubs/circulars/ec088.pdf

This presentation compares railroad traffic estimates from the 2002 Commodity Flow Survey (CFS) to benchmark values found in the Surface Transportation Board’s (STB’s) Carload Waybill Sample (Waybill). The CFS is an establishment-based survey of freight traffic conducted by the Bureau of Transportation Statistics and the Census Bureau. The 2002 CFS population estimates were developed from a 50,000 establishment stratified sample, and included all modes of freight transportation. The CFS sample frame excludes agricultural shipments from farm to first point of processing, imports from port of entry to first point of processing, crude petroleum, printed matter, commodities carried in non-revenue transportation, and shipments by government, service industries, utilities, most retailers, and households. The Waybill is an annual carrier-based survey conducted by the STB. The Waybill includes railroad-only transportation, as well as the railroad portion of rail–truck and rail–water transportation presented in the CFS. The sample frame for the Waybill includes essentially all railroad traffic. The 2002 Waybill population estimates were developed from a 600,000 record stratified sample which included 22% of all railroad traffic. The Waybill is regarded as a benchmark estimate of railroad industry traffic. Comparison of the CFS estimates of railroad traffic to the benchmark Waybill values illustrates the magnitude of in-scope issues, and identifies the differences in the railroad industry, rail–truck, rail–water, and rail–only estimates in the most recent data.

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01023669

English

pp 173-176

2006-1

Transportation Research Circular

Commodity Flow Survey Conference

Web

Figures (4)

Benchmarks; Estimates; Freight traffic; Freight transportation; Intermodal transportation; Piggyback transportation; Rail marine interface; Railroad equipment industry; Railroad traffic; Railroads; Waybill samples; Waybills

2002 Commodity Flow Survey

Freight Transportation; Highways; Marine Transportation; Railroads; Society; Vehicles and Equipment; I10: Economics and Administration

TRIS, TRB

May 1 2006 11:51AM

• Commodity Flow Survey: Improving Methods to Enhance Data Quality and Usefulness
• Economic Geography of Food Distribution in the United States
• Enhancing Interdependency Analysis with the CFS
• Estimating Freight Flows for Metropolitan Area Highway Networks Using Secondary Data Sources
• Estimating Regional Trade Models in the Presence of Missing Data
• Filling Gaps in the U.S. Commodity Flow Picture: Using the CFS with Other Data Sources
• Freight Analysis Framework and the Commodity Flow Survey
• How TRANSEARCH Uses the CFS
• Improving Estimation Process for Shipment Distances in the 2007 CFS: A Multimodal Approach and Integrated Interface
• Intermodal Shipments, Warehousing, and Third Parties: A Special Measurement Issue
• Modal Choice in Product Shipments: Analysis of Nonpublic Census Microdata
• Scope and Industry Coverage of the 2007 Commodity Flow Survey
• Shipment Characteristics in the Commodity Flow Survey: Can One Describe an Elephant?
• Some Suggestions for Improving CFS Data Products
• Synthesizing Truck Origin–Destination Table for Local Transportation Analysis Zones: A Nashville Metropolitan Area Case Study
• Using CFS Data to Guide Regional Transportation Policy and Investment
• Using National Freight Information to Study the Interactions Between Heavy Trucks and Passenger Cars Under Traffic Incidents or Emergencies
• Why Regional and State Data Are Not Enough: Potential Solutions