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Title:

Producing Transportation Data Products from the American Community Survey That Comply With Disclosure Rules
Cover of Producing Transportation Data Products from the American Community Survey That Comply With Disclosure Rules

Accession Number:

01354671

Record Type:

Monograph

Availability:

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Order URL: http://worldcat.org/isbn/9780309431057

Abstract:

With the migration to the American Community Survey (ACS) and current Disclosure Review Board (DRB) data suppression rules, Census Transportation Planning Products (CTPP) would be severely compromised. Therefore, the National Highway Cooperative Research Program (NCHRP) investigated approaches to apply data perturbation techniques that will provide CTPP data users complete tables that are accurate enough to support transportation planning applications, but that also are modified enough that the DRB is satisfied that they prevent effective data snooping. The research team reviewed a significant amount of previous statistical community research on data disclosure research and some previous NCHRP and Federal Highway Administration (FHWA) analyses of CTPP, and settled on a small number of promising data perturbation strategies. These strategies were developed into specific procedures using Census Bureau ACS tables and microdata for four development sites, and the outputs of the different procedures were evaluated and compared in terms of data disclosure limitation and data table utility. An optimal approach that used a combination of the tested procedures was forwarded and then validated on two test sites. During the validation, the procedures were further enhanced and coded. The full procedures performed well on the validation site data, so the research team worked with Census Bureau staff to develop an operational set of computer programs that will enable the perturbation to be applied nationally. The CTPP tables that can be derived from the application of the developed procedures will enable transportation planners to make significantly better use of the ACS-based CTPP tables than they could otherwise do.

Report/Paper Numbers:

NCHRP Project 08-79

Language:

English

Authors:

Krenzke, Tom
Li, Jane
Freedman, Mark
Judkins, David
Hubble, David
Roisman, Rich
Larsen, Michael

Pagination:

386p

Publication Date:

2011

Serial:

NCHRP Web-Only Document

Issue Number: 180
Publisher: Transportation Research Board

ISBN:

9780309431057

Edition:

Contractor Final Report

Media Type:

Digital/other

Features:

Appendices (21) ; Figures; References; Tables

Uncontrolled Terms:

Information disclosure

Subject Areas:

Data and Information Technology; Highways; Planning and Forecasting; Public Transportation; I72: Traffic and Transport Planning

Files:

TRIS, TRB

Created Date:

Oct 21 2011 3:46PM