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.
A 7OO foot array of horizontal and vertical single-axis anemometers was installed at New York's Kennedy Airport on 30-foot poles under the approach to Runway 31R. Although the original purpose for the anemometers was to track the lateral position of wake vortices, new processing algorithms were developed that permit assessment of vortex height and
...
TranPlan 21 was Montana's first statewide multimodal transportation plan. The plan, published inFebruary of 1995, identified the most pressing transportation issues facing Montana, evaluated futuretransportation concerns, and established the policy goals and actions that will guide the state'stransportation system into the 21st Century.The intent o
...
This research report reviews and summarizes bicycle suitability criteria being used in the United States, presents preliminary conclusions, and makes preliminary recommendations regarding such criteria. Conclusions and recommendations are presented here as a starting point for discussion on the state-of-the-practice in bicycle suitability and the p
...
The P46 Laboratory Startup and Quality Control Procedure was developed to ensure the accuracy and reliability of the resilient modulus data produced while testing soil and aggregate materials using closed-loop servo-hydraulic systems. It was developed to provide performance benchmarks for resilient modulus testing equipment and laboratory technicia
...
Results of the evaluation of lightweight materials for aircraft turbine engine rotor failure protection are presented in this report. The program consisted of two phases. Phase 1 was an evaluation of a group of composite materials which could possibly contain the impact energies of 1.0 x 10 6 inch-pounds generated by T53 rotor fragments. Phase 2 re
...
Trapezoidal box girder systems typically consist of twin steel U-shaped girders with a concrete deck acting compositely as the top flange. The top flanges of these U-girders are susceptible to lateral-torsional buckling during transport, erection, and placement of the deck. There is no existing codified design method for lateral bracing of U-shaped
...
In 1980, the Congress passed the Staggers Rail Act, which fostered substantial changes in the railroad industry. By 1995, fewer large freight railroads accounted for most of the industry's revenue and train miles. At the same time, these freight railroads substantially reduced their workforce and track networks. In response, the Congress and railro
...
This project evaluated the effectiveness of symbol traffic signs for young, middle-aged and elderly drivers. Daytime legibility distance and comprehension of 85 symbols in the Manual on Uniform Traffic Control Devices (MUTCD) were measured. Legibility distance under night and night-with-glare conditions, glance legibility, reaction time and conspic
...
To answer questions being raised by abutting residents and businesses about proposed elevated and/or depressed freeway improvements in the urban and suburban areas of Texas, a four-year study has been conducted to estimate the social, economic, and environmental effects of such freeway designs. Eight existing, two under-construction, and one approv
...
The South Dakota Department of Transportation (SDDOT) collects and processes a vast amount of roadway data to support internal and external analysis and design systems. These data are collected by different offices within the SDDOT, are collected by a variety of techniques, and are used for many different purposes. This report presents findings fro
...
Results of computations of pavement layer properties are presented for 24 Texas asphaltic concrete (AC) pavement sections. Layer properties were computed using dynamically analyzed Falling-Weight Deflectometer (FWD) time history data. Asphaltic concrete (AC) surface layer creep compliance data, lower layer moduli and subgrade sublayer thicknesses w
...
This research evaluated the effectiveness of a vehicle-activated strobe light and supplemental sign as enhancements to the WI0-1 sign (enhanced sign system) at passive highway-railroad grade crossings. Three study methods were developed for evaluating the effectiveness of the enhanced sign system including a before and after speed study, a driver s
...
Installation and serviceability were examined for several products manufactured, in part, from recycled products. The following recommendations were reached:The type of recycled plastic snow pole employed in this study is not recommended for general use by ODOT.Though the recycled plastic fence posts used in this study have higher initial cost than
...
The Oregon Department of Transportation is responsible for many steel deck truss bridges containing connection details that are fatigue prone. A typical bridge, the Winchester Bridge in Roseburg, Oregon, was analyzed to assess the loading conditions, stress levels, and fatigue life of the connection details. The analysis included linear-elastic bea
...
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.