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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 6461 - 6480 of 36101 results
  • Assessment of New Mexicos Fee Structure for Overweight and Oversize Vehicles Compared to Practices in Other Western States
    Assessment of New Mexico’s Fee Structure for Overweight and Oversize Vehicles Compared to Practices in Other Western States
    Dehghan-Niri, Ehsan ;
    Cortes, Douglas
    2018-10-01 | PDF
    This research project provides a comparative assessment of oversize /overweight (OS/OW) vehicle permits and fees in New Mexico and other western states. The authors provide a review of current permitting practices, fee structures, fines, legal and permitted maximum weight and dimension limits, escort requirements and charges, compliance assessment ...
  • Benefits of Transit Making the Case That NJ TRANSIT Brings Real Value to New Jerseys Citizens
    Benefits of Transit: Making the Case That NJ TRANSIT Brings Real Value to New Jersey’s Citizens
    Titze, Christopher ;
    Baumgartner, David
    2018-10-01 | PDF
    In the current era of stagnant and even shrinking availability of funding, the ability to make the case for transportation and infrastructure financing is perhaps more important than ever. Factors of a growing and increasingly urbanized population, increasing maintenance demands, and the need to keep up with technological and safety-mandated enhanc ...
  • Evaluation of NonDestructive Density Determination for QAQC Acceptance Testing
    Evaluation of Non-Destructive Density Determination for QA/QC Acceptance Testing
    Mata, David ;
    Ferguson, Nicholas
    2018-10-01 | PDF
    Density is often considered one of the most important parameters for long-term pavement performance. Proper density specifications require the contractor and the Louisiana Department of Transportation and Development (DOTD) to follow quality control (QC) and quality assurance (QA) procedures. Contractors often utilize the nuclear density gauge (NDG ...
  • Economic Competitiveness Definitions and Metrics
    Economic Competitiveness, Definitions and Metrics
    Giuliano, Genevieve ;
    Hassan, Mohammed
    2018-10-01 | PDF
    This Task Order continues earlier work aimed at establishing performance measures for monitoring the economic competitiveness of the freight sector as part of the implementation of the California Sustainable Freight Action Plan (CSFAP). The purpose of this task order is to define competitiveness in California's freight sector, and work with industr ...
  • Effect of Pile Embedment Length on the Connection Behavior and Precast Pile Footing
    Effect of Pile Embedment Length on the Connection Behavior and Precast Pile Footing
    Ronanki, Vidya Sagar ;
    Willis, Gabrielle
    2018-10-01 | PDF
    Rapid economic and population growth, along with deteriorating bridge infrastructure, is putting a persistent strain on the nation's transportation network. Federal and state transportation departments (DOTs) are looking for new ways to build, repair, or replace bridges quickly and with minimal interruption to the traveling public. The FHWA has beg ...
  • Operation of Marine Exhaust Gas Scrubbing Equipment aboard the Great Lakes SelfUnloading Motor Vessel Lee A Tregurtha
    Operation of Marine Exhaust Gas Scrubbing Equipment aboard the Great Lakes Self-Unloading Motor Vessel Lee A. Tregurtha
    The Interlake Steamship Company
    2018-10-01 | PDF
    The Interlake Steamship Company is a privately held company headquartered near Cleveland, Ohio in Middleburg Heights. Interlake and is predecessor companies trace their history back more than 100 years on the Great Lakes. The Company, which employs about 400 people, owns and operates a fleet of eight (8) self-unloading bulk carrying ships on the Gr ...
  • Effect of Proximity of Sheet Pile Walls on the Apparent Capacity of Driven Displacement Piles Summary
    Effect of Proximity of Sheet Pile Walls on the Apparent Capacity of Driven Displacement Piles [Summary]
    Chung, Jae H. ;
    McVay, Michael C.
    2018-10-01 | PDF
    The present research investigated the effects that installation and removal of sheet pile walls (SPW) have on driven piles founded in granular soils. The efforts completed as part of the present study have involved both physical testing and numerical simulation of standardized laboratory tests on granular materials. Further, physical centrifuge tes ...
  • Safety Evaluation of Raised Speed Limits on Kansas Freeways Technical Summary
    Safety Evaluation of Raised Speed Limits on Kansas Freeways [Technical Summary]
    Dissanayake, Sunanda ;
    Shirazenijad, Reza
    2018-10-01 | PDF
    Setting an appropriate speed limit is necessary to provide safe and efficient traffic operations for all road users. It must also be acceptable to the public and enforceable by police. Lower-than-required speed limits may make most drivers non-compliant, whereas higher-than-required speed limits may increase the number of crashes together with rela ...
  • Concept of Operations for a RouteBuilder Based Toll RoadManaged Lanes Information System
    Concept of Operations for a Route-Builder Based Toll Road/Managed Lanes Information System
    Wood, Nick ;
    Kaufman, Jeff
    2018-10-01 | PDF
    This document is a Concept of Operations for using a Route Builder, similar to route builders on mapping platforms like Google® and Bing®, to provide users comprehensive information about the tolled and managed lane facilities, operational nature of these systems, and the costs of a proposed trip. This approach would allow multiple tolling agencies ...
  • Monitoring and Assessing Traffic Safety at Signalized Intersections Using Live Video Images
    Monitoring and Assessing Traffic Safety at Signalized Intersections Using Live Video Images
    Yang, Jidong J ;
    Wang, Ying
    2018-10-01 | PDF
    Signalized intersections represent the most hazard spots on a roadway network. Road users are required to be alert and timely process and respond to a variety of information at signalized intersections, including traffic signal indications and changes, signage, pavement marking, road conditions, and a mix of various road users in conflict. Traditio ...
  • Development and Testing of the Miniaturized Pavement Pressuremeter for Use in Unbound Pavement Layers
    Development and Testing of the Miniaturized Pavement Pressuremeter for Use in Unbound Pavement Layers
    Cosentino, P J ;
    Misilo III, Thaddeus J
    2018-10-01 | PDF
    A small diameter pressuremeter (SDPMT) was developed, tested and used in numerous correlations at four testing sites on and near the campus of the Florida Institute of Technology. SDPMT probes were inserted directly in to the holes made with the drive pin used during nuclear density testing. SDPMT testing produced lift-off, and limit pressures alon ...
  • High Mast Drone Inspection
    High Mast Drone Inspection
    Stewart, Brian ;
    Stock, Daniel
    2018-10-01 | PDF
    In July 2018, Cambridge Systematics, Inc. was tasked by the NJDOT Bureau of Research to quantify to the best extent possible the benefits of using an Unmanned Aerial System (UAS) approach to high mast light pole inspections compared to a traditional, ground-based approach across four project evaluation criteria: safety, efficiency (highway and data ...
  • Analysis of WDC trends in the United States Brief
    Analysis of WDC trends in the United States [Brief]
    Kang, Sanggyun
    2018-10-01 | PDF
    We evaluate at the national level the factors that might explain warehousing and distribution center (WDC) decentralization.
  • Evaluation of Locomotive Emission Reduction Strategies
    Evaluation of Locomotive Emission Reduction Strategies
    Frey, H Christopher ;
    Rastogi, Nikhil
    2018-10-01 | PDF
    Older diesel locomotives may have higher per passenger mile emission rates of NOx and PM compared to other transport modes. Therefore, to reduce human exposure to train-generated air pollution, measures to reduce emissions from existing locomotives are desirable. Fuel use and emission rates (FUER) depend on exhaust after-treatment technology, locom ...
  • Evaluation of the Impact of the I66 Active Traffic Management System Phase II
    Evaluation of the Impact of the I-66 Active Traffic Management System: Phase II
    Dutta, Nancy ;
    Fontaine, Michael D
    2018-10-01 | PDF
    In early 2013, construction began on a Virginia Department of Transportation (VDOT) project to install an Active Traffic Management (ATM) system on I-66 from US 29 in Centreville to the Capital Beltway (I-495). Construction was completed in September 2015. This project was intended to improve safety and operations on I-66 without physically expandi ...
  • Grand Forks East Grand Forks 2015 Travel Demand Model Update
    Grand Forks East Grand Forks 2015 Travel Demand Model Update
    Motuba, Diomo ;
    Khan, Muhammad Asif
    2018-10-01 | PDF
    The Grand Forks East Grand Forks 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, mod ...
  • Comparative Nitrogen and Pesticide Removal with Sorption Media in Linear Ditch for Groundwater and Stormwater Treatment Summary
    Comparative Nitrogen and Pesticide Removal with Sorption Media in Linear Ditch for Groundwater and Stormwater Treatment [Summary]
    Wanielista, Marty ;
    Chang, Ni-Bin
    2018-10-01 | PDF
    Researchers at the University of Central Florida studied the use of bio-absorption activated media (BAM) in linear ditches as a method of removing dissolved organics nitrogen (DON) from runoff.
  • Parametric Functions for Conceptual and Feasibility Estimating in Public Highway Project Portfolios
    Parametric Functions for Conceptual and Feasibility Estimating in Public Highway Project Portfolios
    Blampied, Nigel Bryan
    2018-10-01 | PDF
    Owners face challenges in setting priorities between potential projects to maintain, rehabilitate, and improve their infrastructure. The estimated cost of each potential project is a factor that owners use in setting priorities between projects and in developing their long-term maintenance and construction project portfolio. Owners face a dilemma: ...
  • Waterproofing Details of Connections for Adjacent Precast Concrete BoxBeam Bridges
    Waterproofing Details of Connections for Adjacent Precast Concrete Box-Beam Bridges
    Patnaik, Anil ;
    Habouh, Mohamed
    2018-10-01 | PDF
    Development of cracks at the longitudinal joints of non-composite box-beam bridges is often a recurring problem that causes water leakage at the joints and corrosion of the embedded prestressing strands. Satisfactory performance of such bridges depends on the effectiveness of the key way, waterproofing membrane, and tie rods, as well as the related ...
  • Repair of Steel BeamGirder Ends with Ultra HighStrength Concrete Phase II Part 1 UHPC Pushout Experiments
    Repair of Steel Beam/Girder Ends with Ultra High-Strength Concrete – Phase II: Part 1: UHPC Push-out Experiments
    Kruszewski, Dominic ;
    Zaghi, Arash Esmaili
    2018-10-01 | PDF
    A novel repair method has been developed at the University of Connecticut for corroded steel bridge girder ends. The repair method consists of encasing the corroded steel area with UHPC. The UHPC panel is bonded to the steel girder using headed shear studs welded to the uncorroded portions of the thin web. The repair provides a secondary load path ...
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