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.
The National Weather Service (NWS) operates a National Water Model that continually forecasts water flow throughout the stream network of the United States, including 190,000 miles of streams divided into 100,000 stream reaches in Texas. The NWS has also deployed real-time flood inundation mapping to about half of Texas, and it will complete covera
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The Global Navigation Satellite System (GNSS), commonly known as the global positioning system, has become one of the fastest-growing emerging technologies delivering location services to various sectors. The applications of geospatial data span every sphere of modern-day science and industry where geographical positioning matters. The list include
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This research addresses the application of high-strength reinforcing steel in Texas bridge construction. The project involved experimental and analytical work to evaluate the effectiveness of current design recommendations for high-strength reinforcing steel in various bridge structural components. These components include spliced beam, CIP-PCP dec
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Bridges structures deteriorate over time due to various factors. Understanding the factors that affect bridge deterioration rates is necessary for state agencies to maintain the safety and functionality of bridges during their design service life. To improve deterioration modeling in Montana, significant factors affecting bridge deterioration were
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The Minnesota Department of Transportation (MnDOT) recognizes the importance of subsurface drainage in pavements. Various studies have indicated that adequate drainage of pavement layers enhances performance of pavements in general. MnDOT thus uses various types of subsurface drainage in varying degrees of styles, frequency of use, and minor variat
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This document presents a curated collection of vintage mid-20th-century advertisements from The Timken Company, a pioneering manufacturer of roller bearings for railroad applications. Compiled by Edwin R. Kraft in December 2024, the collection emphasizes Timken’s promotional campaign for “Roller Freight,” a term highlighting the adoption of roller
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This research study addressed three key problems: 1) identifying safer, timely, and cost-effective solutions for removing accumulated debris from bridge piers, 2) designing and implementing countermeasures to prevent debris accumulation, and 3) finding technological solutions to enhance bridge inspection, scour detection, and mapping of river cross
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The concept of self-enforcing roadways (SER) has been proposed as a speed management strategy to achieve harmony in drivers’ speed selection and to address safety issues associated with excessive speeding. While numerous examples of SER implementation exist outside of the United States (particularly in European countries), this concept is fairly ne
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The Missouri Department of Transportation (MoDOT) has implemented High Friction Surface Treatment (HFST) in various locations across the state to reduce roadway departure crashes by improving pavement friction. To prevent premature failure and to ensure that the HFST performs adequately throughout the design life, this study evaluates the pavement
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A brief description of different modes possible in the proposed TransTexas Corridor (TTC) is initiated. The main modal alternatives, which include highway, high speed rail, and maglev are discussed in detail. Alternatives for financing the TTC infrastructure are discussed. A detailed financial feasibility of a maglev system along a hypothetical cor
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This report outlines the results of a comprehensive study focused on enhancing maintenance and inspection practices for mechanically stabilized earth (MSE) walls. The project was sponsored by the Arkansas Department of Transportation (ARDOT), and its central objectives were to formulate the best management practices for MSE wall maintenance and dev
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The Missouri Department of Transportation (MoDOT) has implemented High Friction Surface Treatment (HFST) in various locations across the state to reduce roadway departure crashes by improving pavement friction. To prevent premature failure and to ensure that the HFST performs adequately throughout the design life, this study evaluates the pavement
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The ability for agencies to notify vehicles that they are approaching a work zone has the potential to reduce crashes by increasing motorists’ awareness of the conditions. A critical element of this ability involves providing accurate work zone information and reducing the potential for false alerts that motorist ignore, which can be accomplished t
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The objective of this project was to examine and document liquid deicing storage and pump systems currently being used by departments of transportation and public works agencies across the country and best practices for managing and maintaining these systems. Using information gathered from surveys and interviews with transportation agencies and ve
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This research study addressed three key problems: 1) identifying safer, timely, and cost-effective solutions for removing accumulated debris from bridge piers, 2) designing and implementing countermeasures to prevent debris accumulation, and 3) finding technological solutions to enhance bridge inspection, scour detection, and mapping of river cross
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Precast concrete (PC) is manufactured in a controlled environment to provide desired quality, durability and efficiency to build transportation assets that address significant infrastructure challenges faced by the nation. Quality deficiencies during any lifecycle phase can easily off set the expected benefits, leading to premature failures and exc
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The TITAN project, now in its second phase, is a cutting-edge, interactive web-based framework designed for the warehousing, integration, analytics, and visualization of transportation data. This phase has successfully implemented resilient and scalable database architectures, enabling rapid storage and retrieval of massive datasets, which are crit
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The primary objective of Task 6 was to develop guidelines, recommendations, and a decision- making tool based on extensive laboratory performance evaluation of the selected sealers and coatings (Task 3, Chapter 3 in the Research Report [R1]) under both normal and accelerated weathering (QUV and QFOG exposure) followed by developing a rating system
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One critical aspect of a proactive approach to improving the safety of commercial motor vehicles (CMVs) involves how to communicate with CMV drivers safely and effectively through an electronic notification system (ENS). The objectives of this project are to: 1) conduct a review of existing ENS methods in use by CMV drivers, trucking companies, and
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The ability for agencies to notify vehicles that they are approaching a work zone has the potential to reduce crashes by increasing motorists’ awareness of the conditions. A critical element of this ability involves providing accurate work zone information and reducing the potential for false alerts that motorist ignore, which can be accomplished t
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