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Quality Control Procedures for Archived Operations Traffic Data: Synthesis of Practice and Recommendations

Final Report

Prepared for
Office of Highway Policy Information
Federal Highway Administration
U.S. Department of Transportation
Washington, DC 20590

Prepared by
Texas Transportation Institute
3135 TAMU
College Station, Texas 77843

Under contract to
Battelle
505 King Avenue
Columbus, Ohio 43201

Battelle Work Order Number 03-007

March 2007


QUALITY ASSURANCE STATEMENT

The Federal Highway Administration provides high-quality information to serve Government, industry, and the public in a manner that promotes public understanding. Standards and policies are used to ensure and maximize the quality, objectivity, utility, and integrity of its information. FHWA periodically reviews quality issues and adjusts its programs and processes to ensure continuous quality improvement.


Technical Report Documentation Page

1. Report No.
2. Government Accession No. 3. Recipient's Catalog No.
4. Title and Subtitle
QUALITY CONTROL PROCEDURES FOR ARCHIVED OPERATIONS TRAFFIC DATA: SYNTHESIS OF PRACTICE AND RECOMMENDATIONS
5. Report Date
March 2007
6. Performing Organization Code
7. Author(s)
Shawn Turner
8. Performing Organization Report No.
9. Performing Organization Name and Address
Texas Transportation Institute
The Texas A&M University System
College Station, TX 77843-3135
10. Work Unit No.
11. Contract or Grant No.
DTFH61-97-C-00010
12. Sponsoring Agency Name and Address
Federal Highway Administration
Office of Highway Policy Information
400 7th Street, NW
Washington, DC 20590
13. Type of Report and Period Covered
Final Report
April 2006 - March 2007
14. Sponsoring Agency Code
15. Supplementary Notes
Performed under subcontract to Battelle (Work Order 03-007).
Contracting Officer's Technical Representative (COTR): Mr. Ralph Gillmann
16. Abstract

This report summarizes and provides recommendations for quality control procedures to be used for archived data that have been collected and saved by traffic operations systems. This report summarizes quality control procedures used in numerous archived data management systems (ADMS) implementations. This report provides recommendations for a basic set of quality control procedures that can be adopted, as well as a process to customize quality control procedures for system-specific data quality issues. This report also details the typical steps involved in quality control procedures, including the automation of quality checks, the use of manual visual review, the flagging of failed data records, and the use of metadata to document quality control actions.

The intended audience for this report includes developers of ADMS as well as researchers and analysts of archived data. Software developers can adapt some or all of the quality control procedures as deemed necessary. The report could also be used or specified in writing a request for proposals to develop an ADMS. Researchers and data analysts can use the report to perform additional quality control if data quality remains an issue.

17. Key Words
data quality, quality control, validity criteria, data quality rules, validity checks
18. Distribution Statement
No restrictions. This document is available to the public through the National Technical Information Service, Springfield, VA 22161.
19. Security Classif.
(of this report)

Unclassified
20. Security Classif.
(of this page)

Unclassified
21. No. of Pages
44
22. Price

Form DOT F 1700.7 (8-72) Reproduction of completed page authorized


ACKNOWLEDGMENTS

The author gratefully acknowledges the sponsorship of the Federal Highway Administration (FHWA) and the insightful comments of the project director, Mr. Ralph Gillmann. The author also acknowledges the following persons who provided information about current practices in their data archive:

  1. ADMS Virginia: Dr. Brian Smith and Mr. Ramkumar (Ram) Venkatanarayana
  2. California PeMS: Dr. Karl Petty
  3. CATT Lab: Mr. Michael Pack
  4. Central Florida Data Warehouse: Dr. Haitham Al-Deek
  5. Kentucky ADMS: Dr. Mei Chen
  6. Phoenix RADS: Mr. David Wolfson and Mr. Tomas Guerra
  7. PORTAL: Dr. Robert Bertini
  8. WisTransPortal: Dr. Steven Parker

TABLE OF CONTENTS


LIST OF FIGURES


LIST OF TABLES

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Updated: 04/05/2011
 

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