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.
This project was initiated to update MDOT’s existing pavement management process documentation, to develop a QMP for pavement management data collection activities, and to identify recommendations for improving the quality checks on pavement condition data collected by vendors. The Pavement Management Manual and the Network-Level Pavement Condition
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NJ TRANSIT customers can use a smartphone application (“app”) to purchase tickets and access transit information. Most smartphones are equipped with technology that can determine the user’s location; however, this feature is currently used in a limited capacity in NJ TRANSIT’s app. By knowing a customer’s location, NJ TRANSIT could potentially prov
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The adjacent precast prestressed concrete box-beam bridge is the bridge of choice for short and short-to-medium span bridges. This choice is because of the ease of construction, favorable span-to-depth ratios, aesthetic appeal, and high torsional stiffness. However, this bridge is losing favor primarily because of persisting durability performance
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Geotechnical assets – which include rock and soil slopes, retaining walls, and material sites – support and protect the Department's pavements and bridges, and provide the material from which these assets are built. They are the front line of the Department's site-based risk management strategies, as they bear the brunt of natural hazards such as e
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This two-part study employs fine-scale performance measures and analytical techniques designed to evaluate and improve transit services for people experiencing disability. Part one puts forth a series of time-sensitive, general transit feed system (GTFS)-enhanced employment accessibility models that account for multiple transportation modes, catego
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The main goal of this study was to build a bicycle simulator and study the interaction between cyclists and other roadway users. The simulator developed was used in conjunction with Oculus Rift goggles to create a virtual cycling environment. The virtual riding environment contained roadway infrastructures and features such as intersections, crossw
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The ever-increasing processing speed and computational power of computers and simulation systems has led to correspondingly larger, more sophisticated representations of evacuation traffic processes. Today, micro-level analyses can be conducted for megaregion-level hurricane evacuations involving millions of vehicles, spanning thousands of miles of
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The objective of this study is to develop a framework that utilizes the bridge inspection data collected on an ongoing basis to update transition probabilities for concrete bridge decks. Doing so is expected to improve the representativeness of these probabilistic deterioration models and the accuracy of their predictions. An evaluation is also con
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The South Carolina Department of Transportation (SCDOT) develops near (3-5 years) and long (15- 20 years) range plans for road widening, alignment, bridge replacement, and new road construction. Each road/bridge project may impact wetlands or streams typically through (but not limited to) placement of fill, clearing of vegetation, installation of p
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The Rodanthe Emergency Ferry Channel (REFC) is essential for transporting emergency personnel, equipment, and supplies to Hatteras Island communities following any event that renders the Herbert C. Bonner Bridge and/or North Carolina Highway 12 impassable. The N. C. Ferry Division runs ferries during these emergency situations from Stumpy Point to
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Today many intersections are operated based on data input from nonintrusive video detection systems. With those systems the video detectors can be easily deployed/modified for different application requirements. This research project is initiated to improve the convenience and coverage and reduce cost in turning movement data collection, by taking
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Since 2000, Massachusetts has been involved with numerous field trials of experimental hot mix asphalt mixtures. These experimental mixtures included several pilot projects using the Superpave mixture design methodology, utilization of warm mix asphalt technologies, asphalt rubber mixtures, latex or polymer modified asphalt mixtures, and reflective
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As people are being encouraged to walk more to reduce environmental impacts and improve public health, transportation professionals are obligated to make walking as safe as possible. To date, the dominant strategy used by state agencies to allocate safety resources is the hotspot approach,which focuses on identifying and recommending improvements f
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ATVs and SxSs are designed for off-road use only. Vehicle design, lack of operator training, and other factors, like roadway speeds, all contribute to the risk of a crash. In fact, more than half of all ATV and SxS fatalities occur on public roads. ATV crashes on the road also result in more serious injuries than those off the road. Knowledge about
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Concrete hydrodemolition and diamond grinding/grooving operations performed for the North Carolina Department of Transportation (NCDOT) generate large amounts of concrete residuals. Currently these residuals can be classified by the North Carolina Department of Environmental Quality (NCDEQ) as Class A Residuals and are treated as “inert debris” thu
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This report documents the research project “Development and Testing of Responder Phase III.” Under previous research, a Responder system has been developed to provide relevant and timely information to first responders, allow responders to provide information on the scene and incident to others in the organization, and support reliable and always a
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The world of transportation is on the verge of undergoing an impactful transformation. Over the past decade, automotive computing technology has progressed far more rapidly than anticipated. Most major auto manufacturers integrated automated features such as adaptive cruise control, automated braking, self-parking, and lane departure warning into t
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This project developed a quantile regression method for predicting future traffic flow at a signalized intersection by combining both historical and real-time data. The algorithm exploits nonlinear correlations in historical measurements and efficiently solves a quantile loss optimization problem using the Alternating Direction Method of Multiplier
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In 2016, the Idaho Transportation Department contracted with the University of Idaho's Social Science Research Unit to conduct a survey on the general public's engagement and communication with the department. The goal of conducting this survey was to better understand how Idahoans engage with ITD, how they prefer to communicate with and receive co
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As part of Research Project 0-5598, outputs include guidelines and specifications on how a district can design and construct long-life overlays using the concept of balanced mix design; and training materials describing the best ways to select, design, and construct these high performance thin overlays.
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