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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation
FHWA Highway Safety Programs

Low-Cost Treatments for Horizontal Curve Safety 2016


This document is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The U.S. Government assumes no liability for the use of the information contained in this document.

The U.S. Government does not endorse products or manufacturers. Trademarks or manufacturers' names appear in this report only because they are considered essential to the objective of the document.


Quality Assurance Statement

The Federal Highway Administration (FHWA) 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 Documentation Page

1. Report No.


2. Government Accession No.

3. Recipient's Catalog No.

4. Title and Subtitle

Low-Cost Treatments for Horizontal Curve Safety 2016

5. Report Date

January 2016

6. Performing Organization Code

7. Authors

Richard Albin, Victoria Brinkly, Joseph Cheung, Frank Julian, Cathy Satterfield, William Stein, Eric Donnell, Hugh McGee, Ann Holzem, Matthew Albee, Jonathan Wood, Fred Hanscom

8. Performing Organization Report No.

9. Performing Organization Name and Address

Pennsylvania Transportation Institute
Pennsylvania State University
201 Transportation Research Building
University Park, PA 16802

Vanasse Hangen Brustlin, Inc (VHB)
8300 Boone Blvd., Suite 700
Vienna, VA 22182-2626

10. Work Unit No.

11. Contract or Grant No.


12. Sponsoring Agency Name and Address

Federal Highway Administration Office of Safety
1200 New Jersey Ave., SE
Washington, DC 20590

13. Type of Report and Period Covered

Final Report, April 2014 – January 2016

14. Sponsoring Agency Code


15. Supplementary Notes:

The contract manager for this report was Joseph Cheung.

16. Abstract

FHWA created the Low-Cost Treatments for Horizontal Curve Safety in 2006 (McGee and Hanscom, 2006). There have been many advances in highway safety since that initial 2006 guide. The purpose of this publication is to serve as an update to the 2006 Low-Cost Treatments for Horizontal Curve Safety. The primary audience for this publication is local transportation agencies. This publication provides information specifically relating to lower volume two-lane roads and the agencies that manage them. It will help transportation agencies and their construction crews understand the available countermeasures and how to select and apply them.

17. Key Words

horizontal curves, systemic approach, low-cost countermeasures, two-lane roads

18. Distribution Statement

No restrictions.

19. Security Classif. (of this report)


20. Security Classif. (of this page)


21. No. of Pages:


22. Price

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