The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations.
Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.
In 1977, the Oregon Department of Transportation constructed a demonstration project using approximately 47,000 tons of stockpiled asphalt concrete (AC) material to overlay a section of pavement in Oregon. The stockpiled AC material was hot in-plant recycled and paved as a conventional hot AC mix. For twelve years of service, the hot in-plant recyc
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Two important factors for minimizing rutting of hot mix asphalt (HMA) mixtures are: a) the fractured face count of aggregate when gravel is used as coarse aggregate, and b) the use of manufactured sand. Both these factors relate to the shape and texture of the aggregate particles. One of the objectives of this paper was to study the effect of crush
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The objective of this project was to evaluate the construction and performance of a full-height retaining wall system. The contractor chose to use the Hilfiker Reinforced Soil Embankment with cast-in-place, concrete panels. The project included three Hilfiker walls at the interchange of I-20 and 24th St. in Phoenix. Construction of the embankment c
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This chapter covers initial placement, adjustment, improvement, relocation, replacement and maintenance of utility facilities in, on, above, or below the right-of-way of primary highways, including attachments to primary highway structures. It embodies the basic specifications and standards needed to ensure the safety of the highway user and the in
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Federal Aviation Regulations for crashworthy seats include the Head Injury Criteria (HIC) as part of the pass-fail performance specifications. For passenger seats located behind interior walls to meet this requirement, the dynamics of head impact with the wall must be evaluated from a system approach. Procedures for conducting system tests and anal
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Rice method (ASTM D2041 ) is used for determining the theoretical maximum specific gravity of asphalt paving mixtures which is one of the main test parameters used for mix design and construction quality control. The repeatability and reproducibility of the Rice method is not considered satisfactory especially when highly absorptive aggregates are
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The discrete-element method of slab analysis provides a unique method for analyzing both complex and common pavement problems. The purpose of this report is to illustrate the application of this tool to a typical rigid pavement design problem. The problem chosen for use herein involves the design of concrete shoulder pavements. To facilitate the pr
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This report identifies and discusses a number of human factors, safety, and traffic management issues associated with available and emerging technologies for communicating with motorists in their vehicle. The advantages and limitations of each of these technologies are also discussed. The intent of this report is to provide the Department with insi
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This bibliography is part of an on-going research project between the Texas Transportation Institute and the Texas Department of Transportation. The bibliography attempts to include all significant reports prepared by the Institute in support of urban transportation travel demand modeling practice in Texas. An annotation is provided for those repor
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This report summarizes the results of the survey of the North Central Expressway automobile and transit panelists conducted in October 1991. The results of the survey indicate that travel patterns in the corridor have not deteriorated significantly since the start of Expressway construction south of 1-635. Details regarding the survey analysis and
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This report documents the results of the traffic data collection efforts during October 1991, sixteen months after reconstruction began on the US-75 North Central Expressway south of the 1-635 LBJ Freeway. Traffic conditions and patterns were monitored during October 1989 and May 1990 (before construction) and during October 1990, May 1991, and Oct
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This report contains the appendices and supporting data for the project report. The project report contains a critical evaluation of the resilient modulus testing procedure based on more than 200 tests. The state-of-the-art for obtaining and interpreting resilient modulus data is reviewed. The initial testing procedures proposed by the American Ass
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The purpose of this study was to identify the single-vehicle run-off-the-road (SVROR) accident mitigation techniques that are currently in use in Texas, and to assist the Texas State Department of Transportation (TxDOT) highway engineer in identifying areas that may be susceptible to SVROR accidents. Using the accident records from the TxDOT from 1
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United States. Department of Transportation. Federal Aviation Administration
1992-04-16
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PDF
This advisory circular (AC) updates the guidance and information concerning the identification and marking requirements of Federal Aviation Regulations (FAR) Part 45, and describes an acceptable means, but not the sole means, of compliance with the regulations.
Oregon. Department of Transportation. Materials and Research Section
1992-04-01
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PDF
In the past few years, the Oregon Department of Transportation (ODOT) has started designing and constructing permeable bases in both flexible and rigid pavements. Two types of permeable bases have been used: one is asphalt treated permeable base and the other is open graded aggregate base. The desirable characteristics (permeability and resilient m
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The Federal Aviation Administration began development of an extensive longitudinal database on its air traffic controller workforce following the strike of 1981. Since that time, data have been collected on thousands of air traffic controllers, spanning a period which covers their application to the federal government for employment to their achiev
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To evaluate the effects of orthostatic, altitude, and pharmacologic stresses upon civil aviation-specific performance, a double-blind, randomized, crossover trial of atenolol, 100mg, was designed and executed. Hypertensive males are females qualifying for the FAA class 3 certificate with mean age of 34 were studied during simulated altitude exposur
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