Development of a TL-5 Vertical Faced Concrete Median Barrier Incorporating Head Ejection Criteria

Rosenbaugh, Scott K.; Sicking, Dean L.; Faller, Ronald K.; Midwest States Regional Pooled Fund Program; Midwest Roadside Safety Facility

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Development of a TL-5 Vertical Faced Concrete Median Barrier Incorporating Head Ejection Criteria

2010-12-10
By Rosenbaugh, Scott K. ; Sicking, Dean L. ; Faller, Ronald K.

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English

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Details:

Creators:

Rosenbaugh, Scott K. ; Sicking, Dean L. ; Faller, Ronald K.

Rosenbaugh, Scott K. ; Sicking, Dean L. ; Faller, Ronald K. Less -
Corporate Creators:

Midwest States Regional Pooled Fund Program ; Midwest Roadside Safety Facility

Midwest States Regional Pooled Fund Program ; Midwest Roadside Safety Facility Less -
Corporate Contributors:

Nebraska. Department of Roads ; United States. Federal Highway Administration

Nebraska. Department of Roads ; United States. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Barriers (Roads) Concrete Median Barriers Crash Guardrails Head Ejection Highway Safety Median Barriers Testing Tractor Trailer Vertical Supports
Publication/ Report Number:

TRP-03-194-07
Resource Type:

Tech Report
Geographical Coverage:

United States ; Nebraska

United States ; Nebraska Less -
TRIS Online Accession Number:

1099564
Edition:

Final Report
Corporate Publisher:

Midwest Roadside Safety Facility
Abstract:

A concrete median barrier was designed as a cost efficient alternative to current barriers for use on roadways with heavy tractor-trailer traffic. The barrier geometry was configured to optimize small car and pickup truck safety. After reviewing over 100 previously conducted crash tests, it was determined that vertical faced barriers reduced the risk of vehicle rollover during impacts by eliminating tire climb and vehicle roll. Also, multiple crash test videos were utilized to create a head ejection envelope encompassing the extent of an occupant’s head as it is ejected through the vehicle side window during impact. The top of the barrier was cut back to comply with this envelope. The internal steel reinforcement was optimized such that material costs were minimized while providing adequate strength. Slight alterations were made to ensure compatibility with common construction practices, such as slipforming. These alterations resulted from discussions with multiple contractors and members of various State Departments of Transportation. A 200 ft section of barrier was constructed and crash tested with an 80,000-lb tractor trailer in compliance with the NCHRP Report 350 requirements. The barrier performance satisfied all criteria under TL-5 impact conditions.
Format:

PDF
Funding:

SPR-3(017)
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:9c9d41cad1ae2a792f3377b9b518329c983a4a37f86a1d4319327d042ee30023
Download URL:

https://rosap.ntl.bts.gov/view/dot/39293/dot_39293_DS1.pdf
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Development of a TL-5 Vertical Faced Concrete Median Barrier Incorporating Head Ejection Criteria

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