Technical Report Documentation Page

1. Report No. FHWA-JPO-09-065, EDL# 14497	2. Government Accession No.	3. Recipient's Catalog No.
4. Title and Subtitle Incorporating Weather Impacts in Traffic Estimation and Prediction Systems	5. Report Date September 2009
6. Performing Organization Code
7. Author(s) Hani S. Mahmassani, Jing Dong, Jiwon Kim, Roger B. Chen and Byungkyu (Brian) Park	8. Performing Organization Report No.
9. Performing Organization Name and Address SAIC 1710 SAIC Drive McLean, VA 22102	10. Work Unit No. (TRAIS)
11. Contract or Grant No. DTFH60-06-D-00005
12. Sponsoring Agency Name and Address U.S. Department of Transportation Federal Highway Administration Office of Operations 1200 New Jersey Avenue, SE Washington, DC 20590	13. Type of Report and Period Covered Final Report February 2008 – September 2009
14. Sponsoring Agency Code
15. Supplementary Notes Roemer Alfelor and Randy VanGorder, Contracting Officer Technical Managers
16. Abstract Dynamic Traffic Simulation-Assignment models are gaining wider acceptance and use to support transportation network planning and traffic operations decision-making. Significant improvements in traffic estimation capabilities and overall utilities of these systems for traffic management can be achieved by upgrading or adjusting them to account for the impacts of weather. This report presents the results of a study to develop weather-sensitive dynamic traffic assignment (DTA) models for Traffic Estimation and Prediction (TrEPS) application, which addresses both supply and demand aspects of the response to adverse weather, including user responses to various weather-specific interventions such as advisory information and control actions.
17. Key Words Weather-sensitive traffic simulation-assignment, dynamic traffic assignment (DTA), Traffic Estimation and Prediction Systems (TrEPS); road weather management, variable message signs (VMS), traffic flow models.	18. Distribution Statement No restrictions.
19. Security Classification (of this report) Unclassified	20. Security Classification (of this page) Unclassified	21. No of Pages 108	22. Price N/A

1. Report No.

FHWA-JPO-09-065, EDL# 14497

2. Government Accession No.

3. Recipient's Catalog No.

4. Title and Subtitle

Incorporating Weather Impacts in Traffic Estimation and Prediction Systems

5. Report Date

September 2009

6. Performing Organization Code

7. Author(s)

Hani S. Mahmassani, Jing Dong, Jiwon Kim, Roger B. Chen and Byungkyu (Brian) Park

8. Performing Organization Report No.

9. Performing Organization Name and Address

SAIC
1710 SAIC Drive
McLean, VA 22102

10. Work Unit No. (TRAIS)

11. Contract or Grant No.

DTFH60-06-D-00005

12. Sponsoring Agency Name and Address

U.S. Department of Transportation
Federal Highway Administration
Office of Operations
1200 New Jersey Avenue, SE
Washington, DC 20590

13. Type of Report and Period Covered

Final Report
February 2008 – September 2009

14. Sponsoring Agency Code

15. Supplementary Notes

Roemer Alfelor and Randy VanGorder, Contracting Officer Technical Managers

16. Abstract

Dynamic Traffic Simulation-Assignment models are gaining wider acceptance and use to support transportation network planning and traffic operations decision-making. Significant improvements in traffic estimation capabilities and overall utilities of these systems for traffic management can be achieved by upgrading or adjusting them to account for the impacts of weather. This report presents the results of a study to develop weather-sensitive dynamic traffic assignment (DTA) models for Traffic Estimation and Prediction (TrEPS) application, which addresses both supply and demand aspects of the response to adverse weather, including user responses to various weather-specific interventions such as advisory information and control actions.

17. Key Words

Weather-sensitive traffic simulation-assignment,
dynamic traffic assignment (DTA), Traffic
Estimation and Prediction Systems (TrEPS); road
weather management, variable message signs (VMS),
traffic flow models.

18. Distribution Statement

No restrictions.

19. Security Classification (of this report)

Unclassified

20. Security Classification (of this page)

Unclassified

21. No of Pages

108

22. Price

N/A

Form DOT F 1700.7 (8-72)

Reproduction of completed page authorized.

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