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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 6041 - 6060 of 36049 results
  • Best Practices in Implementing Tactical Transit Lanes
    Best Practices in Implementing Tactical Transit Lanes
    Gahbauer, John ;
    Matute, Juan
    2019-02-01 | PDF
    This guide is intended for planners interested in implementing Tactical Transit Lanes, particularly first-time lanes. Its focus is on the implementation, i.e., the planning and outreach considerations of the project as opposed to design, for which other recent resources exist (see Other Resources section). The content of this guide is drawn from in ...
  • Improving the Amount and Availability of Pedestrian and Bicyclist Count Data in Texas
    Improving the Amount and Availability of Pedestrian and Bicyclist Count Data in Texas
    Turner, Shawn M. ;
    Benz, Robert J.
    2019-02-01 | PDF
    The Texas Department of Transportation (TxDOT) currently has very limited count data on pedestrian and bicyclist usage of the transportation system. The first objective of this project was to recommend a count monitoring process for pedestrians and bicyclists that can be sustained statewide. The second objective was to develop a consolidated databa ...
  • Traveltime Optimization on I285 with Improved Variable Speed Limit Algorithms and Coordination with Ramp Metering Operations
    Travel-time Optimization on I-285 with Improved Variable Speed Limit Algorithms and Coordination with Ramp Metering Operations
    Laval, Jorge A. ;
    Guin, Angshuman
    2019-02-01 | PDF
    The objective of this project is to develop effective variable speed limit (VSL) control algorithms to minimize the total travel time on I-285 study corridor. The study corridor is Eastbound/Southbound I-285 between GA 400 and I-20. Using a stochastic simulation-based optimization framework that combines microsimulation model GTsim and a genetic al ...
  • Centralized License Plate ProductionOnDemand Printing
    Centralized License Plate Production/On-Demand Printing
    Martin, James B. ;
    Findley, Daniel
    2019-02-01 | PDF
    The purpose of this study was to gather information related to the current North Carolina license plate production process. North Carolina employs the emboss-and-paint method, with the use of labor from the NC Correctional Institution for Women (NCCIW), which is owned and operated by Correction Enterprises. To compare associated costs and other cri ...
  • Best Practices for the Use of RAS in HMA Instructor Guide
    Best Practices for the Use of RAS in HMA: Instructor Guide
    Zhou, Fujie
    ORCID ICON IMG
    2019-02-01 | PDF
    The asphalt paving industry has always advocated recycling, including reclaimed asphalt pavement (RAP), recycled asphalt shingles (RAS), tires, etc. The earliest recycling asphalt pavement dates back to 1915. In addition to conserving energy and protecting the environment, the use of RAP/RAS can significantly reduce the cost of hot-mix asphalt (HMA ...
  • Laboratory and Field Evaluation of a Composite GluedLaminated Girder to Deck Connection
    Laboratory and Field Evaluation of a Composite Glued-Laminated Girder to Deck Connection
    Hosteng, Travis ;
    Phares, Brent
    2019-02-01 | PDF
    Buchanan County, Iowa, has been working with the National Center for Wood Transportation Structures and a timber fabricator to develop the next-generation timber bridge. The goal is to increase the structural efficiency of timber bridges and increase longevity by (1) creating a composite deck-girder system and (2) using an epoxy overlay. These desi ...
  • Small Sample Mix Design for Full Depth Reclamation Workshop Student Guide
    Small Sample Mix Design for Full Depth Reclamation: Workshop Student Guide
    Sebesta, Stephen ;
    Taylor, Ross
    2019-02-01 | PDF
    This product is the guidebook used in the workshop on small sample mix design for full depth reclamation.
  • Test Specifications for SPST and HWTT
    Test Specifications for SPST and HWTT
    Walubita, Lubinda F. ;
    Nyamuhokya, Tito
    2019-02-01 | PDF
    This document is divided into two major parts: Part A and B. Part A documents some proposed modifications to the Hamburg wheel-tracking test (HWTT) and Tex 242-F test procedure, whereas Part B documents the proposed tentative specification and test procedures for the simple punching shear test (SPST). For Part A (HWTT specification), the major modi ...
  • Stochastic Optimization of Cellulosic Biofuel Supply Chain Incorporating Feedstock Yield Uncertainty
    Stochastic Optimization of Cellulosic Biofuel Supply Chain Incorporating Feedstock Yield Uncertainty
    Sharma, Bijay P ;
    Yu, T Edward
    2019-02-01 | PDF
    The global goal to reduce dependence on fossil fuels and to mitigate greenhouse gas emissions has resulted in research focused on environment friendly and socio-economically sustainable renewable energy sources. However, commercial production of bio-energy is constrained by biomass supply uncertainty and associated costs. This study presents an int ...
  • Developing A Comprehensive Pavement Condition Evaluation System for Rigid Pavements in Georgia
    Developing A Comprehensive Pavement Condition Evaluation System for Rigid Pavements in Georgia
    Tsai, Yichang (James) ;
    Wu, Yi-Ching
    2019-02-01 | PDF
    The objective of this project is to develop standardized pavement condition evaluation systems for Georgia’s rigid pavements, including continuously reinforced concrete pavement (CRCP) and jointed plain concrete pavement (JPCP). The research outcomes of this project include: 1) a first-ever CRCP pavement condition evaluation system (CRCPACES) that ...
  • Best Practices for the Use of RAS in HMA Workshop Student Handbook
    Best Practices for the Use of RAS in HMA: Workshop Student Handbook
    Zhou, Fujie
    ORCID ICON IMG
    2019-02-01 | PDF
    The asphalt paving industry has always advocated recycling, including reclaimed asphalt pavement (RAP), recycled asphalt shingles (RAS), tires, etc. In addition to conserving energy and protecting the environment, the use of RAP/RAS can significantly reduce the cost of hot-mix asphalt (HMA) paving. With the recent increased use of asphalt shingles ...
  • Evaluation and Analysis of Postdisaster Reentry in Megaregions A Pilot Study
    Evaluation and Analysis of Post-disaster Re-entry in Megaregions: A Pilot Study
    Wolshon, Brian ;
    Mitchell, Brant
    2019-02-01 | PDF
    This study attempts to address the deficit of the limited research that has been conducted on re-entry. Through a comprehensive literature review there were a total of six publications that addressed re-entry with nearly all of the research focused on the individual evacuee and not the decision-making process on initiating re-entry. This study also ...
  • Texas MechanisticEmpirical Flexible Pavement Design and Analysis System TxME Student Handbook
    Texas Mechanistic-Empirical Flexible Pavement Design and Analysis System (TxME) Student Handbook
    Hu, Sheng ;
    Zhou, Fujie
    2019-02-01 | PDF
    This student handbook is to provide basic and advanced training about the use of the Texas Mechanistic-Empirical Flexible Pavement Design and Analysis System (TxME). It can be used as a TxME user manual and a standalone resource of Mechanistic-Empirical (M-E) flexible pavement design training material. The purposes of the TxME training are to: (1) ...
  • Development of Alternative Bridge Superstructures for South Dakota Local Roads
    Development of Alternative Bridge Superstructures for South Dakota Local Roads
    Carnahan, Zachary ;
    Mingo, Michael
    2019-02-01 | PDF
    The South Dakota Department of Transportation (SDDOT) allows the use of precast double-tee bridges in counties because they are economical and fast in construction. Alternative durable prefabricated bridge systems are needed to provide more options to local governments. The present study was carried out to investigate the feasibility of alternative ...
  • Implementation of Texas MechanisticEmpirical Flexible Pavement Design System TxME
    Implementation of Texas Mechanistic-Empirical Flexible Pavement Design System (TxME)
    Hu, Sheng ;
    Rahman, Asif
    2019-02-01 | PDF
    The Texas Mechanistic-Empirical flexible pavement design system (TxME) allows Texas pavement designers to take full advantage of new or premium materials, with a full consideration of the influential factors including pavement structure, traffic volume, and environmental condition. To further enhance and implement the software, extensive lab testin ...
  • Investigating the Need for Drainage Layers in Flexible Pavements
    Investigating the Need for Drainage Layers in Flexible Pavements
    Ghavami, Masoud Seyed Mohammad ;
    Hosseini, Maryam Sadat
    2019-02-01 | PDF
    Moisture can significantly affect flexible pavement performance. As such, it is crucial to remove moisture as quickly as possible from the pavements, mainly to avoid allowing moisture into the pavement subgrade. In the 1990s the Indiana Department of Transportation (INDOT) adopted an asphalt pavement drainage system consisting of an open-graded asp ...
  • Development of Alternative Bridge Superstructures for South Dakota Local Roads Research Brief
    Development of Alternative Bridge Superstructures for South Dakota Local Roads {Research Brief]
    Wehbe, Nadim I. ;
    Tazarv, Mostafa
    2019-02-01 | PDF
    Double-tee bridges may need replacement after only 40 years of service due to rapid deterioration. With only one supplier of double-tee girders in South Dakota, new prefabricated bridge systems are needed to provide local governments more options when designing new bridges or replacing deteriorated ones.
  • AlkaliSilica Reactivity in the State of Montana
    Alkali-Silica Reactivity in the State of Montana
    Berry, Michael
    2019-02-01 | PDF
    Concrete can be susceptible to expansive reactions between alkalis in the Portland cement and the silicas in the aggregates, which can ultimately reduce the lifespan of the concrete resulting in costly repairs or even replacement. The primary objective of this project is to evaluate the history of and potential for deleterious alkali-silica reactiv ...
    Supporting Files
  • Bismarck Mandan MPO 2015 Travel Demand Model Update
    Bismarck Mandan MPO 2015 Travel Demand Model Update
    Motuba, Diomo ;
    Khan, Asif
    2019-02-01 | PDF
    The Bismarck Mandan (The B-M MPO) Travel Demand Model (TDM) is updated every five years to reflect new ground truths/data and the advancements in the state-of-the-art in transportation modeling techniques and methods. The current update reflects base year 2015 data. The model is a four-step TDM including trip generations, trip distributions, modal ...
  • Exploring the Modified Procurement Framework for Expediting Florida Connected Vehicle CV Deployments
    Exploring the Modified Procurement Framework for Expediting Florida Connected Vehicle (CV) Deployments
    Sando, Thobias ;
    Alluri, Priyanka
    2019-02-01 | PDF
    This study examined the current procurement framework of connected vehicle (CV) deployments in Florida to provide guidance for expediting CV projects. A brief review of the current state-of-the-practice of CV deployment at the regional, national, and international level was conducted. Ongoing and operational CV projects included in the Florida Depa ...
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