This report describes the results of a test program designed to: (1) determine the amount of toxic decomposition byproducts from the use of Halon 1211 on large seat fires in an aircraft cabin while in flight; (2) compare relative hazard levels from the use of common aircraft hand-held extinguishers (Halon 1211, monammonium phosphate, carbon dioxide
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The purpose of this study was to explore how VMT might be used as a transportation evaluation metric in Virginia, based on reviewing how VMT has been applied elsewhere and translating such uses to the Virginia context. The research explored how widespread VMT is in the United States; at what points in Virginia’s planning process could VMT analysis
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For several decades, transportation planners and engineers have used automobile Level of Service (LOS) to communicate transportation system conditions. In Virginia, stakeholders such as Fairfax County officials have shown interest in supplementing LOS with vehicle miles traveled (VMT), which can be a useful measure of vehicle travel and a proxy for
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Highlights the PCC pavement smoothness program in the state of Kansas and how Kansas contractors achieve some of the smoothest concrete highways in the country.
A comprehensive sea-level-static test cell data collection and evaluation effort to review operational characteristics of "off-the-shelf" carburetor ice detection/warning devices for general aviation piston engine aircraft during operation on aviation grade fuel and automotive grade fuel. Presented herein are results, observations and conclusions d
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An evaluation of selected aircraft firefighting agents was made, both blanketing and auxiliary, and of dispensing equipment. Laboratory studies and outdoor fire tests were conducted to ascertain the fire extinguishing equivalency of the auxiliary agents and to determine the most acceptable agents and equipment for use in performing large-scale fire
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The rate of energy release in fire is discussed. The significance of calorimetric measurements of energy release for materials is related to thermal-dynamic parameters, namely heat of reaction and stoichiometric coefficients. It is shown that a common set of parameters is necessary to express ignition, flame spread and mass loss due to combustion a
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United States. Department of Transportation. Federal Highway Administration
1993-01-01
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MPEG
This is a video styled after "The Twilight Zone" that talks about the importance of traffic safety and what measures the FHWA and NTCIP are taking to keep people safe.
Tells pavement designers how springy the subgrade material is under stress-- how much it deforms under a known load and also how much it springs back. Resilient modulus is a way of characterizing the stiffness of the material.
Falling weight deflectometers (FWDs) are used by pavement engineers to predict a pavement's expected life and then decide how fast to maintain that pavement. For it to give reliable data, the FWD should be recalibrated once a year at one of 4 regional FWD calibration centers run by SHRP.
Tells pavement designers how springy the subgrade material is under stress-- how much it deforms under a known load and also how much it springs back. Resilient modulus is a way of characterizing the stiffness of the material.
United States. Department of Transportation. Federal Highway Administration
1995-01-01
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MPEG
Anti-icing is a systematic approach to winter road maintenance. It requires the use of the right tools (material, equipment, personnel and strategy) in the right place and at the right time to prevent or reduce the ice-pavement bond.
US Army Corps of Engineers. Cold Regions Research & Engineering Laboratory
1998-01-01
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MPEG
As a preventive strategy, the most cost effective anti-icing method is to spread a chemical (liquid, solid, or pre-wetted solid) on the road before freezing precipitation starts, or soon after it begins, but always before a bond can be formed between the pavement and the ice or snow-pack.
United States. Department of Transportation. Federal Highway Administration
1987-01-01
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MPEG
Explains the various pedestrian safety programs developed by the Federal Highway Administration over the past ten years. Shows many common urban and rural pedestrian safety problems and identifies countermeasures for each problem. Depicts the common problems faced by various age groups and the handicapped, and identifies sources of additional infor
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An attempt is made to develop mathematical predictions for various aspects of the dynamics of post crash aircraft fires. The basis of the analysis is the experimental simulation scenario under study by the FAA. The effects of wind are considered as well as the effect of interior and exterior fires. Suggestions are presented for estimating cabin doo
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A review is made of studies in which full-scale fire growth was compared with laboratory test data on materials. Both room and corridor fires are included in which primarily interior lining materials have been the combustible element. The studies include standard test methods and other laboratory devices used in the United States and other countrie
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