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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.

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Showing 5041 - 5060 of 36958 results
  • Defensive Driving for Snowplow Operators
    Defensive Driving for Snowplow Operators
    Camden, Matthew C. ;
    Hickman, Jeffrey S.
    2020-06-01 | PDF
    An often-overlooked aspect of winter maintenance operations is snowplow operators’ risk of a crash. The goal of this project was to examine key causes of collisions involving snowplows, identify defensive driving strategies snowplow operators can use to prevent crashes, and develop two comprehensive and engaging snowplow operator training modules o ...
  • Congestion Reduction Through Efficient Empty Container Movement Under Stochastic Demand [supporting datasets]
    Dessouky, Maged M. ;
    Carvajal, Santiago
    2020-06-01 | PDF
    In today’s world, there is a significant amount of investigation regarding how to efficiently distribute loaded containers from the ports to the consignees. However, to fully maximize the process and become more environmentally friendly, one should also study how to allocate the empty containers created by these consignees. This is an essential par ...
    Dataset Supporting Files
  • Structural Fiber Reinforcement to Reduce Deck Reinforcement and Improve LongTerm Performance
    Structural Fiber Reinforcement to Reduce Deck Reinforcement and Improve Long-Term Performance
    McRory, Jared W ;
    Pozo-Lora, Fray F
    2020-06-01 | PDF
    The use of deicing salts on highway bridges has decreased the service life of bridge decks due to the accelerated corrosion of the steel reinforcement. The use of Glass Fiber Reinforced Polymer (GFRP) in bridge decks as a means of corrosion-mitigation has been met with some success; however, GFRP is a linear-elastic material that does not exhibit a ...
  • Significance and Prospects of Transportation Planning at the Megaregional Scale
    Significance and Prospects of Transportation Planning at the Megaregional Scale
    Oden, Michael ;
    Sciara, Gian-Claudia
    2020-06-01 | PDF
    Megaregions are defined as connected networks or clusters of metropolitan areas where the U.S. population and employment growth is increasingly concentrating. Fashioning strategies and new institutional arrangements to better manage growth in these tightly connected metropolitan areas has been identified a crucial challenge calling for new thinking ...
  • Enhancing Extension Recommendations for Improving Herbicide Resistance Management on Georgia Roadsides
    Enhancing Extension Recommendations for Improving Herbicide Resistance Management on Georgia Roadsides
    McCullough, Patrick ;
    Shilling, Donn
    2020-06-01 | PDF
    The presence of Italian ryegrass on Georgia roadsides reduces motorist site visibility and increases maintenance costs for the DOT. Herbicide selection is limited on roadsides due to economics and the susceptibility of roadside turfgrasses to injury. Consequently, agronomists often apply the same chemistries every year without rotating herbicide mo ...
  • High Friction Surface Treatments HFSTs for Bridge Decks
    High Friction Surface Treatments (HFSTs) for Bridge Decks
    Abernathy, Craig
    2020-06-01 | PDF
    High Friction Surface Treatments (HFSTs) are pavement surfacing systems that provide skid-resistant, and deck sealing properties not typically associated with conventional materials. The spot application of a thin layer of durable, high friction aggregates as a topping on specially engineered resin or a polymer binder affords long-lasting traction ...
  • Campus Automated Shuttle Service Deployment Initiative
    Campus Automated Shuttle Service Deployment Initiative
    Lin, Pei-Sung ;
    Kourtellis, Achilleas
    2020-06-01 | PDF
    Most mid-size and large open-campus universities have courtesy shuttle or bus service as an important mode of transportation around campus and in nearby vicinities. Given on-campus traffic conditions, traffic congestion between classes, the nature of short-distance trips within or around campus, and difficulty with finding parking spaces, automated ...
  • Risk of Snake Entanglement Is Affected by Installation Method of Erosion Control Blankets
    Risk of Snake Entanglement Is Affected by Installation Method of Erosion Control Blankets
    Ward, Krista J ;
    Jobe, Kasey L
    2020-06-01 | PDF
    At the conclusion of road construction projects, an erosion control product (e.g., blankets, spray mulch) is installed to reduce soil loss and promote plant growth. Wildlife, such as snakes (suborder Serpentes), are prone to entanglement in erosion control blankets (ECBs) that contain polypropylene mesh with fused apertures. Previous reports have n ...
  • TenYear Review of Monitoring System on I35W Saint Anthony Falls Bridge
    Ten-Year Review of Monitoring System on I-35W Saint Anthony Falls Bridge
    Brown, Riley J ;
    McCoy, Rebekka
    2020-06-01 | PDF
    The I-35W St. Anthony Falls bridge was highly instrumented with over 500 sensors to verify design assumptions, serve as a testbed to examine bridge sensing techniques, and evaluate the effectiveness of different bridge monitoring strategies. The instrumentation deployed on the bridge to investigate the structural behavior included vibrating wire st ...
  • Prototype System for Implementing the Ultrasonic Guided Wave Method on the Field
    Prototype System for Implementing the Ultrasonic Guided Wave Method on the Field
    Erdogmus, Ece ;
    Garcia, Eric
    2020-06-01 | PDF
    This report presents the latest improvements in a recently developed nondestructive testing (NDT) technique for early detection of various flaws such as corrosion, delamination, and concrete cracking in reinforced concrete (RC) bridge decks. The method, named Ultrasonic Guided Wave Leakage (UGWL) method by the developing authors, involves use of in ...
  • Understanding and Mitigating the Dynamic Behavior of RICWS and DMS Under Wind Loading
    Understanding and Mitigating the Dynamic Behavior of RICWS and DMS Under Wind Loading
    Linderman, L. ;
    Guala, M
    2020-06-01 | PDF
    Dynamic Messaging Signs (DMS) and Rural Intersection Conflict Warning Signs (RICWS) are roadside signs that feature much larger and heavier signs than are typically placed on their respective support systems. The excess weight and size of these signs, in conjunction with their breakaway support systems, introduces vibration problems not seen in the ...
  • Study of AntiStrip Additives on Granite Based FC5 Asphalt Mixtures
    Study of Anti-Strip Additives on Granite Based FC-5 Asphalt Mixtures
    Gu, Fan ;
    Moraes, Raquel
    2020-06-01 | PDF
    This project evaluated the influence of anti-strip additives on the durability and moisture susceptibility of granite-based open-graded friction course, referred to as FC-5 asphalt mixtures. The laboratory testing involved two granite-based FC-5 mixtures containing 1% hydrated lime (by weight of aggregate), 1% hydrated lime plus 0.5% liquid anti-st ...
  • Local Calibration of the Pavement ME for Missouri
    Local Calibration of the Pavement ME for Missouri
    Titus-Glover, Leslie ;
    Rao, Chetana
    2020-06-01 | PDF
    Missouri Department of Transportation (MoDOT) was one of the early adopters of the Mechanistic-Empirical Pavement Design Guide procedure and completed the local calibration using the research grade software in 2009. The emphasis in 2009 was on establishing testing and field data collection programs, and calibrating for new designs as adequate perfo ...
  • Integration of Ramp Metering and OffRamp Progression
    Integration of Ramp Metering and Off-Ramp Progression
    Chang, Gang-Len ;
    Cheng, Yao
    2020-06-01 | PDF
    The primary objective of this project was to develop an integrated freeway control system that can effectively guide the timely activation of key operation components either concurrently or sequentially in contending with daily recurrent congestion. This project produced four traffic models for highway agencies to overcome various constraints exist ...
  • Methods To Ensure Appropriate Installation and Prevent Loosening of Anchor Nuts on Ancillary Highway Structures
    Methods To Ensure Appropriate Installation and Prevent Loosening of Anchor Nuts on Ancillary Highway Structures
    Singh, Japsimran ;
    Hebdon, Matthew H
    2020-06-01 | PDF
    Loose anchor nuts on foundations of highway ancillary structures have been implicated in numerous structural failures in the Transportation industry for several decades. Loose anchor nuts can increase the stresses in the anchor rods, which can lead to potential collapse of the ancillary structure under wind loads. The exact cause of anchor nut loos ...
  • Public Transit and Womens Safety Real and Perceived Concerns A Look at the US and Florida
    Public Transit and Women’s Safety – Real and Perceived Concerns: A Look at the U.S. and Florida
    University of South Florida. National Center for Transit Research (U.S.)
    2020-06-01 | PDF
    This study examines issues of women’s safety and security on public transit. The first section of the report provides background information and synthesizes recent literature on the topic of women’s security not only when using (or working in) public transit, but while traveling in any public space. The second section of the report analyzes transit ...
  • Geotechnical Database Phase III pLog Enterprise Enterprise GISBased Geotechnical Data Management System Enhancements
    Geotechnical Database, Phase III - pLog Enterprise -Enterprise GIS-Based Geotechnical Data Management System Enhancements
    Deaton, Scott L.
    2020-06-01 | PDF
    The Louisiana Department of Transportation (DOTD) has been collecting geotechnical data in the District labs for many years in a variety of different formats, and in many cases, District personnel are inputting the same data repeatedly in different systems. Accessing this data and combining it with new data for the purpose of design, analysis, visu ...
  • Development of CostCompetitive Timber Bridge Designs for LongTerm Performance
    Development of Cost-Competitive Timber Bridge Designs for Long-Term Performance
    Brashaw, Brian ;
    Wacker, James
    2020-06-01 | PDF
    Modern timber bridges have shown that timber is a durable option for primary structural members in highway bridges and can perform satisfactorily for 50 years or longer when properly designed, fabricated and maintained. However, various cost assumptions have indicated that timber bridges are more expensive than concrete bridges. This project was un ...
    Supporting Files
  • Safe and Accessible Pedestrian Facilities Inventory Model SAPFIM Planning and Design
    Safe and Accessible Pedestrian Facilities Inventory Model (SAPFIM): Planning and Design
    Cevallos, Fabian
    2020-06-01 | PDF
    The main objective of this project is to plan and design a web-based software application that local agencies can use for the collection, storage, querying, analysis, and reporting of pedestrian facilities like sidewalks along public roads. Criteria for determining the accessibility of pedestrian facilities will be based on the literature review in ...
  • The Future of Public Spaces and Placemaking June 2020 Summary of Findings from the Knight Urbanism Next Portland Workshop
    The Future of Public Spaces and Placemaking: June 2020 Summary of Findings from the Knight + Urbanism Next Portland Workshop
    University of Oregon  ...
    2020-06-01 | PDF
    The Urbanism Next Center at the University of Oregon, in partnership with Alta Planning + Design, Spirit for Change, and Metro hosted the Future of Public Spaces and Placemaking workshop on January 24th, 2020. This one-day workshop, supported by the Knight Foundation, brought together a wide range of community activists, government officials, polic ...
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