This report will be of interest to researchers and those State and local highway
officials who select, locate, and design traffic barriers. It documents the
results of a crash test of a transition from a W-beam guardrail to a vertical
flared back concrete end section. The test was conducted with a 2000-kg pickup
truck impacting the critical point of the transition at a nominal speed and
angle of 100 km/h and 25 degrees. Damage to the transition section was moderate.
However, the pickup truck rolled over after impact. It was found that the test
results did not meet all of the required criteria for test no. 3-21 in NCHRP
Report 350.
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1. Report No.
FHWA-RD-99-062
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2.
Government Accession No. |
3.
Recipient's Catalog No. |
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4. Title and Subtitle
NCHRP Report 350 Test 3-21 of the Vertical Flared Back Transition
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5. Report Date
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6. Performing Organization
Code
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7. Author(s)
C. Eugene Buth, Wanda L. Menges, and Barbara G. Butler
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8. Performing Organization
Report No.
404211-4
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9. Performing Organization
Name and Address
Texas Transportation Institute
The Texas A&M University System
College Station, Texas 77843-3135
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10. Work Unit No.
(TRAIS)
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11. Contract or Grant
No.
DTFH61-97-C-0039
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12. Sponsoring Agency
Name and Address
Office of Safety and Traffic Operations Research and Development
Federal Highway Administration
6300 Georgetown Pike
McLean, Virginia 22101-2296
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13. Type of Report
and Period Covered
Test Report
July 1997 - September 1998
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14. Sponsoring Agency
Code
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15. Supplementary
Notes
Research performed in cooperation with the Federal Highway Administration.
Research Study Title: Assessment of Existing Roadside Safety Hardware
- II
Contracting Officer's Technical Representative (COTR): Charles F. McDevitt
- HSR-20
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16. Abstract
Few transitions have been tested to NCHRP Report 350 standards. Officials
at FHWA decided that the W-Beam with W-Beam Rub Rail and Steel Posts
Transition to the Vertical Flared Back Concrete Bridge Rail should be
tested to test level three (TL-3). The test performed (test designation
3-21) involves the 2000P (pickup truck) traveling at a nominal speed
and angle of 100 km/h and 25 degrees impacting the critical impact point.
This test is intended to evaluate the strength of the section in containing
and redirecting the pickup truck.
This report presents the details and results of NCHRP Report 350 test
destination 3-21 for evaluation of the W-Beam with W-Beam Rub Rail and
Steel Posts Transition to the Vertical Flared Back Concrete Bridge Rail
to TL-3. The W-Beam with W-Beam Rub Rail and Steel Posts Transition
to the Vertical Flared Back Concrete Bridge Rail did not meet required
criteria K and F of NCHRP Report 350 test designation 3-21.
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17. Key Words
Bridge rail, transition, crash testing, roadside safety.
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18. Distribution
Statement
No restrictions. This document is available to the public through the
National Technical Information Service, 5285 Port Royal Road, Springfield,
VA 22161.
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19. Security Classification
(of this report)
Unclassified
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20.
Security Classification (of this page)
Unclassified
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21. No. of Pages
51
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22. Price
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