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Title:

QUALITY AND ACCURACY OF POSITIONAL DATA IN TRANSPORTATION
Cover of QUALITY AND ACCURACY OF POSITIONAL DATA IN TRANSPORTATION

Accession Number:

00966676

Record Type:

Monograph

Availability:

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Order URL: http://worldcat.org/isbn/0309087813

Abstract:

This report presents guidance for practitioners on the use of positional, or spatial, data in Geographic Information Systems (GIS) for transportation applications. As GIS applications become more common in transportation system management and decision making, concerns have grown about the accuracy of the data used to populate them. Transportation spatial data usually describes the location of features on the highway system using a one-dimensional linear referencing system. The level of accuracy varies by data source and is affected by the precision of the measurement system used to collect it. Agencies need a way to understand the errors that may result when using these data in GIS applications and how these errors may be compounded when combining data from various sources. This project reviewed the linear referencing systems used by state departments of transportation, examined the limitations of typical data sources used in these systems, and developed a model to evaluate the effects of varying data accuracy and provide an assessment of the level of confidence in the system outputs. This report will provide valuable information to transportation practitioners who need to understand and account for the level of precision in GIS-based transportation decision tools.

Supplemental Notes:

CRP-CD-41, which accompanies this report, contains an error model that is implemented as a software program called GISError. 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

Report/Paper Numbers:

Project SP20-47(01)
FY 1998

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Battelle Memorial Institute

505 King Avenue
Columbus, OH 43201 United States

Authors:

Fekpe, E S
Windholz, T
Beard, K
Novak, K

Pagination:

108 p.

Publication Date:

2003

Serial:

NCHRP Report

Issue Number: 506
Publisher: Transportation Research Board
ISSN: 0077-5614

ISBN:

0309087813

Features:

Appendices (3) ; Figures; References (101) ; Tables

Uncontrolled Terms:

Linear referencing systems

Subject Areas:

Design; Planning and Forecasting; Transportation (General); I21: Planning of Transport Infrastructure; I72: Traffic and Transport Planning

Files:

TRIS, TRB, ATRI

Created Date:

Dec 29 2003 12:00AM