A series of eight full-scale crash tests were conducted on five luminaire and sign supports. The test articles were embedded in S-1 soil as per NCHRP No. 230 recommendations. The test vehicles used for all eight impact tests were 1979 Volkswagen Rabbits with the test mass adjusted to be in the range of 1800 + 50 lb. A triaxial accelerometer was pla
...
The effects of tire pressure on flexible pavement response and performance were evaluated using data from the first phase of research at the Federal Highway Administration's Pavement Testing Facility. The Accelerated Loading Facility testing machine was used to simulate traffic loading. The evaluation consisted of three components. First, deflectio
...
A review of current information concerning the methods and equipment for measuring the roughness of new pavements revealed that most States use rideability criteria to determine the quality of newly laid pavement, with the California profilograph as the dominant type of equipment employed. Bump specifications, which have been used throughout the hi
...
The objective was to determine whether, with improved delineation, performance at partially lighted interchanges can approach performance under full lighting, particularly in rain. Two field studies were conducted. The first was to determine whether transient visual adaptation (TVA) influences detection on partially lighted interchanges and could i
...
This report documents the findings of the literature search on instrumentation used in flexible pavements. The search covered areas such as strain, stress, deflection, temperature, moisture, load location, load magnitude, performance models, and backcalculation techniques. Each group of instrumentation was evaluated in terms of the design feasibili
...
This report is a synthesis of research findings and current practices in controlling and protecting pedestrian traffic in work zones. The information presented here is based on a review of research reports and work zone manuals from a selection of state and city highway agencies, discussions with highway officials, and field observations of project
...
This report is a synthesis of research findings and current practices in the selection and application of arrow panels in work zones. The information presented here is based on a review of research reports and work zone manuals from a selection of state and city highway agencies, discussions with highway officials, and field observations of selecte
...
This report is a synthesis of research findings on current practices in the delineation of portable concrete safety-shaped barriers (CSSBS) in work zones. The information is based on a review of research reports and work zone manuals from a selection of state and city highway agencies, discussions with highway officials,and field observations of se
...
This report is a synthesis of research findings and current practices regarding the design and application of systems for anchoring(tieing down) portable concrete safety shaped barriers(CSSBS)to highway pavements. The presented information is based on a literature review, field observation and discussions with highway officials in a selection of st
...
This report is a synthesis of research findings and current practices in the design, selection, and application of rumble strips at work zones. The information presented here is based on a review of research reports and work zone manuals from a selection of state and local highway agencies, discussions with highway officials, and field observations
...
Extensive field, laboratory and analytical studies were conducted into the evaluation and rehabilitation of concrete pavements. Field studies included over 350 rehabilitated pavement sections throughout the U.S. and the construction of two field experiments. A laboratory study was conducted on anchoring dowels in fulldepth repairs. Analyses of fiel
...
Extensive field, laboratory and analytical studies were conducted into the evaluation and rehabilitation of concrete pavements. Field studies included over 350 rehabilitated pavement sections throughout the U.S., and the construction of two field experiments. A laboratory study was conducted on anchoring dowels in full-depth repairs. Analyses of fi
...
Extensive field, laboratory and analytical studies were conducted into the evaluation and rehabilitation of concrete pavements. Field studies included over 350 rehabilitated pavement sections throughout the U. S., and the construction of two field experiments. A laboratory study was conducted on anchoring dowels in full-depth repairs. Analyses of f
...
This document has been developed after review of 46 of the 52 (50 States, District of Columbia and Puerto Rico) State Agencies who responded to our request for their most recent specifications on geotextiles and related geosynthetic materials. The original requests were sent March 16, 1987, with follow up requests in April of 1988. From the excelle
...
A non-destructive method for determining the in-place strength of bridge timber piling above and below water, developed under the Maryland Highway Planning and Research Program, is presented. It is an ultrasonic wave propagation method in which the in-place strength (load carrying capacity) of a timber pile is correlated to the pile's wave velocity
...
This report is a synthesis of research findings and current practices regarding the design and application of systems for anchoring (tieing down) portable concrete safety shaped barriers (CSSBs) to highway pavements. The presented information is based on a literature review, field observation and discussions with highway officials in a selection of
...
This report is a synthesis of research findings on current practices in the delineation of portable concrete safety-shaped barriers (CSSBs) in work zones. The information is based on a review of research reports and work zone manuals from a selection of state and city highway agencies, discussions with highway officials, and field observations of s
...
The design applications of the preboring pressuremeter (PBPMI) test include: shallow foundations under vertical loads, deep foundations under vertical and horizontal loads, ground anchors, cantilever drilled shaft walls and anchored bulkheads, pavements, ground improvement and compaction control. The preboring pressuremeter (PBPMI') test is of litt
...
Links with this icon indicate that you are leaving a Bureau of Transportation
Statistics (BTS)/National Transportation Library (NTL)
Web-based service.
Thank you for visiting.
You are about to access a non-government link outside of
the U.S. Department of Transportation's National
Transportation Library.
Please note: While links to Web sites outside of DOT are
offered for your convenience, when you exit DOT Web sites,
Federal privacy policy and Section 508 of the Rehabilitation
Act (accessibility requirements) no longer apply. In
addition, DOT does not attest to the accuracy, relevance,
timeliness or completeness of information provided by linked
sites. Linking to a Web site does not constitute an
endorsement by DOT of the sponsors of the site or the
products presented on the site. For more information, please
view DOT's Web site linking policy.
To get back to the page you were previously viewing, click
your Cancel button.
United States Department of Transportation
