1. Report No. 3. Recipient's Catalog No. FHWA/TX-15/0-6828 ...

1. Report No.

FHWA/TX-15/0-6828-1

2. Government Accession No.

4. Title and Subtitle

INVESTIGATION OF NEW VEHICLE DETECTORS FOR HIGH-SPEED SIGNALIZED INTERSECTIONS

7. Author(s)

Dan Middleton, Praprut Songchitruksa, Mike Pratt, Srinivasa Sunkari, Srinivas Geedipally, and Hassan Charara

9. Performing Organization Name and Address

Texas A&M Transportation Institute College Station, Texas 77843-3135

3. Recipient's Catalog No.

5. Report Date

September 2015

6. Performing Organization Code

8. Performing Organization Report No.

Report 0-6828-1

10. Work Unit No. (TRAIS)

11. Contract or Grant No.

Project 0-6828

12. Sponsoring Agency Name and Address

Texas Department of Transportation

13. Type of Report and Period Covered

Technical Report:

Research and Technology Implementation Office 125 E. 11th Street

August 2014?August 2015

14. Sponsoring Agency Code

Austin, Texas 78701-2483

15. Supplementary Notes

Project performed in cooperation with the Texas Department of Transportation and the Federal Highway

Administration.

Project Title: Develop Guidelines for New Vehicle Detectors at High-Speed Signalized Intersections

URL:

16. Abstract

Early indications from the use of the newest vehicle detectors for high-speed signalized intersections

suggested that they perform well as replacements for the Texas Department of Transportation's

(TxDOT's) legacy systems, but this early conclusion needed verification based on rigorous field testing

in a variety of traffic and environmental conditions. This research investigated the performance

characteristics of detectors designed for the stop line area and indecision zone detection. In some cases,

new detectors involved two technologies to cover both upstream and stop line areas. Increasing use of

infrared (IR) cameras with video imaging systems was an attempt to overcome some of the limitations of

traditional video detection. While these IR cameras may improve video detection for some lighting and

temperature conditions, evidence suggested that they do not improve detection performance under all

conditions.

The objectives of this research were to: Determine current TxDOT-specific needs for new vehicle detectors. Identify the most promising detectors for both stop line and dilemma zone detection. Develop guidelines on each new technology and establish recommended controller and detector settings to guide TxDOT on installation and use of each detector and combination of detectors.

17. Key Words

Indecision Zone, Dilemma Zone, High-Speed

18. Distribution Statement

No restrictions. This document is available to the

Signalized Intersections, Radar, Video,

public through NTIS:

Magnetometer, Infrared

National Technical Information Service



19. Security Classif.(of this report)

Unclassified

20. Security Classif.(of this page)

Unclassified

21. No. of Pages

190

22. Price

INVESTIGATION OF NEW VEHICLE DETECTORS FOR HIGH-SPEED SIGNALIZED INTERSECTIONS

by

Dan Middleton, Ph.D., P.E. Research Engineer

Texas A&M Transportation Institute

Praprut Songchitruksa, Ph.D., P.E. Associate Research Engineer

Texas A&M Transportation Institute

Michael P. Pratt, P.E. Assistant Research Engineer Texas A&M Transportation Institute

Srinivasa Sunkari, P.E. Research Engineer

Texas A&M Transportation Institute

Srinivas Geedipally, Ph.D. Assistant Research Engineer Texas A&M Transportation Institute

and

Hassan Charara Research Scientist Texas A&M Transportation Institute

Report 0-6828-1 Project 0-6828 Project Title: Develop Guidelines for New Vehicle Detectors at High-Speed Signalized Intersections

Performed in Cooperation with the Texas Department of Transportation

and the Federal Highway Administration

September 2015

TEXAS A&M TRANSPORTATION INSTITUTE College Station, Texas 77843-3135

DISCLAIMER

The contents of this report reflect the views of the authors, who are solely responsible for the facts and accuracy of the data, the opinions, and the conclusions presented herein. The contents do not necessarily reflect the official view or policies of the Texas Department of Transportation (TxDOT), Federal Highway Administration (FHWA), The Texas A&M University System, or the Texas A&M Transportation Institute (TTI). This report does not constitute a standard or regulation, and its contents are not intended for construction, bidding, or permit purposes. The use of names or specific products or manufacturers listed herein does not imply endorsement of those products or manufacturers. The engineer in charge of the project was Dan Middleton, P.E. #60764.

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