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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 7181 - 7200 of 36114 results
  • Economic Analysis Framework for Freight Transportation Based on Florida Statewide MultiModal Freight Model
    Economic Analysis Framework for Freight Transportation Based on Florida Statewide Multi-Modal Freight Model
    Peng, Zhong-Ren ;
    Yu, Haitao
    2018-02-01 | PDF
    Freight transportation plays a vital role in local and regional economy. The markets and businesses from different regions and locations can be connected through freight movements. But it is difficult to quantify the economic contribution of freight transportation. To date, no such study in Florida has been conducted. One of the major functions of ...
  • Designing Pavements to Support the Heavy Loads in the Energy Development Areas
    Designing Pavements to Support the Heavy Loads in the Energy Development Areas
    Jensen, Darrin ;
    Chen, Hua
    2018-02-01 | PDF
    This document consists of a PowerPoint presentation addressing the challenges of pavement design in energy development areas. It was presented at a workshop on February 26, 2018 in Austin, Texas. The project's main objectives were to: (1) develop materials options suitable for early trafficking; (2) recommend pavement designs that are structurally ...
  • CTTRANSIT Operates New Englands First Fuel Cell Hybrid Bus
    CTTRANSIT Operates New England's First Fuel Cell Hybrid Bus
    Warren, Stephen ;
    Eudy, Leslie
    2018-02-01 | PDF
    Connecticut Transit (CTTRANSIT), owned by the Connecticut Department of Transportation, provides fixed route transportation services to three major metropolitan areas in the state: Hartford, New Haven, and Stamford. CTTRANSIT is committed to improving the environment for its passengers and the communities it serves. For the past several years, it h ...
  • Electric Vehicle Sharing Planning and Operations
    Electric Vehicle Sharing Planning and Operations
    Zhao, Dongfang ;
    Li, Xiaopeng
    2018-02-01 | PDF
    Dongfang Zhao (ORCID ID 0000-0002-5424-9915); Xiaopeng (Shaw) Li (ORCID ID 0000-0002-5264-3775); Yu Zhang (ORCID ID 0000-0003-1202-626X)This project includes literature review and proposing a model for EV planning and operations. We first conducted a literature review on the relevant EV planning and operations. Then we propose a model that integrat ...
  • Effectiveness of Transportation Funding Mechanisms for Achieving National State and Metropolitan Economic Health and Other Livability Goals
    Effectiveness of Transportation Funding Mechanisms for Achieving National, State and Metropolitan Economic, Health and Other Livability Goals
    Lewis, Rebecca ;
    Zako, Robert
    2018-02-01 | PDF
    Federal, state and local governments spent approximately $320 billion on transportation in 2012. These public monies buy outputs: facilities and services for highways, transit, air, water, rail and pipelines (BTS, 2016, 110–114, table 5-5). But how effectively do these investments deliver desired outcomes: reducing commute times, improving the econ ...
  • Designing Pavements to Support the Heavy Loads in the Energy Development Areas Project Summary
    Designing Pavements to Support the Heavy Loads in the Energy Development Areas [Project Summary]
    Zhou, Fujie ;
    Zollinger, Dan
    2018-02-01 | PDF
    In recent years, rapid energy development in Texas has caused significant damage to many farm-to-market (FM) roads, which traditionally have a thin asphalt surface layer plus a stabilized base directly over the subgrade. These roadways were often rehabilitated with full-depth reclamation (FDR), and often 2 to 3 percent cement was added to the pulve ...
  • Investigation of MacroDefectFree Concrete for ABC including Robotic Construction
    Investigation of Macro-Defect-Free Concrete for ABC including Robotic Construction
    Phares, Brent M. ;
    Freeseman, Katelyn
    2018-02-01 | PDF
    Accelerated Bridge Construction (ABC) has grown tremendously over the past several years, due in part to the maturation of new materials that have properties conducive to working in an ABC environment. In recent years, Caterpillar Inc. has developed several formulations of a cementitious material for building purposes called CEMPOSIT, which is a va ...
  • Development and Testing of a Prototype Connected Vehicle WrongWay Driving Detection and Management System
    Development and Testing of a Prototype Connected Vehicle Wrong-Way Driving Detection and Management System
    Finley, Melisa D. (Melisa Dayle) ;
    Chrysler, Susan T.
    2018-02-01 | PDF
    The primary objective of Phase II was to develop a prototype connected vehicle wrong-way driving detection and management system at the Texas A&M University Respect, Excellence, Leadership, Loyalty, Integrity, Selfless Service (RELLIS) campus. The purpose of the prototype system was to test and fine-tune the system components and operations at an o ...
    Supporting Files
  • Evaluation of Automated Flagger Assistance Devices
    Evaluation of Automated Flagger Assistance Devices
    Brown, Henry ;
    Sun, Carlos
    2018-02-01 | PDF
    Automated flagger assistance devices (AFADs) are designed to improve worker safety by replacing flaggers who are typically located near traffic approaching a work zone. In this study, a new AFAD developed by the Missouri Department of Transportation (MoDOT) was evaluated via a combined driving simulator and field study. The MoDOT AFAD configuration ...
  • Impact of Perceptual Speed Calming Curve Countermeasures on Drivers Anticipation and Mitigation Ability A Driving Simulator Study
    Impact of Perceptual Speed Calming Curve Countermeasures on Drivers’ Anticipation and Mitigation Ability : A Driving Simulator Study
    Valluru, Krishna ;
    Siby, Samuel
    2018-02-01 | PDF
    Horizontal curves are unavoidable in rural roads and are a serious crash risk to vehicle occupants. This study investigates the impact and effectiveness of three curve-based perceptual speed-calming countermeasures (advance curve warning signs, chevron signs, and a heads-up display (HUD) sign) on drivers’ hazard anticipation and mitigation behavior ...
  • Evaluation of Potential uses for a Hand Held Portable Xray Fluorescence Spectrometer
    Evaluation of Potential uses for a Hand Held Portable X-ray Fluorescence Spectrometer
    Jones, Kevin B.
    2018-02-01 | PDF
    One of the renewal projects under the Second Strategic Highway Research Program (SHRP 2) explored the potential for broad use of portable spectroscopic devices to fingerprint construction materials commonly used in transportation infrastructure. One of the instruments identified as having potential was a portable X-ray Fluorescence (XRF) instrument ...
  • Intelligent Compaction of SoilsData Interpretation and Role in QCQA Specifications
    Intelligent Compaction of Soils-Data Interpretation and Role in QC/QA Specifications
    Dunston, Phillip S. ;
    Cai, Hubo
    2018-02-01 | PDF
    This report describes a study of intelligent compaction (IC) technologies, within the context of actual construction projects, for its potential as a component of INDOT’s QC/QA for soils. The output from an IC-equipped roller compaction equipment is a real-time area mapping of the compacted lift stiffness as captured by the IC measure. Data was col ...
  • Evaluation of Optional andor Replacement Concrete Sealers
    Evaluation of Optional and/or Replacement Concrete Sealers
    Kerestly, Maria
    2018-02-01 | PDF
    This is an In-House evaluation of products performed by ODOT’s Office of Materials Management. ODOT Spends about $8M per year on coating concrete for esthetic purposes. Built into the coating is sealing capability to help protect the concrete and the steel within. The acceptance of sealers and coatings is done based on laboratory tests, but the tes ...
  • Positioning Planning and Operation of Emergency Response Resources and Coordination between Jurisdictions
    Positioning, Planning and Operation of Emergency Response Resources and Coordination between Jurisdictions
    Ouyang, Yanfeng ;
    Xie, Siyang
    2018-02-01 | PDF
    Railroad related rail incidents, particularly those involving hazardous material (hazmat), cause severe consequences and pose significant threats to safety, public health and the environment. Rail safety is a huge issue in Midwestern states such as Illinois, Wisconsin, and Minnesota. This project aims at strategically positioning and allocating eme ...
  • Driver Performance and Behavior in Adverse Weather Conditions An Investigation Using the SHRP2 Naturalistic Driving Study DataPhase 2
    Driver Performance and Behavior in Adverse Weather Conditions: An Investigation Using the SHRP2 Naturalistic Driving Study Data—Phase 2
    Ahmed, Mohamed ;
    Ghasemzadeh, Ali
    2018-02-01 | PDF
    Ahmed (orcid.org/0000-0002-1921-0724); Ghasemzadeh (orcid.org/0000-0003-1232-251X); Hammit (orcid.org/0000-0002-8859-9075); Khan (orcid.org/0000-0001-5996-091X); Das (orcid.org/0000-0003-4674-5334); Ali (orcid.org/0000-0001-7643-7143); Eldeeb (orcid.org/0000-0001-9669-5991)The impact of adverse weather conditions on transportation operation and saf ...
    Supporting Files
  • Evaluation of Routing Protocols for Vehicular Ad hoc Networks VANETs in Connected Transportation Systems
    Evaluation of Routing Protocols for Vehicular Ad hoc Networks (VANETs) in Connected Transportation Systems
    Andrews, Jeffrey ;
    Humphreys, Todd E.
    2018-02-01 | PDF
    Recognizing the fundamental role of information flow in future transportation applications, the research team investigated the quality and security of information flow in the connected vehicle (CV) environment. The research team identified key challenges and their potential solutions. Concerning information quality, the team conducted comparative a ...
    Supporting Files
  • Directional Rumble Strips for Reducing WrongWayDriving Freeway Entries
    Directional Rumble Strips for Reducing Wrong-Way-Driving Freeway Entries
    Zhou, Huaguo ;
    Xue, Chennan
    2018-02-01 | PDF
    This report presents the evaluation results of five types of directional rumble strips (DRS) based on extensive field tests conducted at the National Center for Asphalt Technology (NCAT) in Auburn, Alabama. The ultimate goal of this study is to develop a low-cost safety countermeasure by capturing a driver’s attention through elevated in-vehicle so ...
  • Characterization of Residuals Collected from Street Sweeping Operations
    Characterization of Residuals Collected from Street Sweeping Operations
    Lloyd, Lewis N. ;
    Fitch, Michael
    2018-02-01 | PDF
    Street sweeping is a routine roadway maintenance activity conducted by the Virginia Department of Transportation (VDOT). It also provides an added benefit as a non-structural stormwater best management practice implemented by VDOT to meet total maximum daily loads for the Chesapeake Bay watershed. This best management practice functions by removing ...
  • Fiber Reinforced Concrete for Improved Performance of Transportation Infrastructure
    Fiber Reinforced Concrete for Improved Performance of Transportation Infrastructure
    Birely, Anna C. ;
    Park, Philip
    2018-02-01 | PDF
    Steel fiber-reinforced concrete (SFRC) provides improved tensile performance of concrete. This improved performance can be used in slabs to reduce the volume of conventional steel reinforcement, create longer spans, or reduce slab thickness. This can lead to a reduction in structure weight and improvements in the safety and speed of construction. T ...
  • Cybersecurity Challenges and Pathways in the Context of Connected Vehicle Systems
    Cybersecurity Challenges and Pathways in the Context of Connected Vehicle Systems
    Yeh, Enoch ;
    Choi, Junil
    2018-02-01 | PDF
    As vehicles become more automated, security issues in automotive systems such as radar and dedicated short-range communication (DSRC) must be thoroughly examined. This report provides an overview and comparison of the inherent security flaws in automotive radar and DSRC technologies. Existing implementations of automotive radar are vulnerable to a ...
    Supporting Files
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