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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 7221 - 7240 of 36114 results
  • Regulating Hazardousmaterials Transportation with Behavioral Modeling of Drivers
    Regulating Hazardous-materials Transportation with Behavioral Modeling of Drivers
    Su, Lui ;
    Kwon, Changhyun
    2018-01-29 | PDF
    Changhyun Kwon (ORCID ID 0000-0001-8455-6396)This project considers network regulation problems to minimize the risk of hazmat accidents and potential damages to the environment, while considering bounded rationality of drivers. We consider government interventions such as road pricing, roadbans, and curfews for hazmat traffic and/or regular non-ha ...
  • Garmin Market Diversification Use Case Overview
    Garmin : Market Diversification & Use Case Overview
    Garmin (Firm)
    2018-01-25 | PDF
    Garmin’s aviation GPS products support both surface and airborne applications. Garmin produces FAA certified and non-certified equipment for the General Aviation market, including both fixed-wing and rotorcraft platforms. Aside from instrument approach procedures, Garmin’s non-certified aviation products perform the same operations as our certified ...
  • Effects of High Strength Steel Bars and Steel Casing on the Response of Drilled Shafts
    Effects of High Strength Steel Bars and Steel Casing on the Response of Drilled Shafts
    Stuedlein, Armin W. ;
    Li, Qiang
    2018-01-24 | PDF
    The amount of steel reinforcement in drilled shaft foundations has increased over the past several decades to account for anticipated seismic hazards. Increased reinforcement may lead to a higher frequency of anomalies within shafts due to the increased difficulty for concrete to flow through reduced clearance between the reinforcement. High-streng ...
  • Bridge Scour Technology Transfer
    Bridge Scour Technology Transfer
    Brooks, Colin ;
    Wienert, Michelle
    2018-01-24 | PDF
    Scour and flooding are the leading causes of bridge failures in the United States and therefore should be monitored. New applications of tools and technologies are being developed, tested, and implemented to reduce bridge scour risk. The National Cooperative Highway Research Program’s Domestic Scan 15-02, on Bridge Scour Risk Management, had its ac ...
  • Continued Evaluation of the TowPlow Trailer System
    Continued Evaluation of the TowPlow Trailer System
    Bennett, Duane A. ;
    Lasky, Ty A.
    2018-01-23 | PDF
    The Caltrans Division of Maintenance is conducting a trial evaluation of the Viking-Cives TowPlow trailer to determine if this equipment could potentially improve the level of service and reduce the cost of their winter snow fighting operations. This report documents the configuration modifications and the deployment activities necessary to deploy ...
  • Adjusting Asphalt Mixes for Increased Durability and Implementation of a Performance Tester to Evaluate Fatigue Cracking of Asphalt
    Adjusting Asphalt Mixes for Increased Durability and Implementation of a Performance Tester to Evaluate Fatigue Cracking of Asphalt
    Coleri, Erdem ;
    Sreedhar, Shashwath
    2018-01-17 | PDF
    Cracking is a common failure mechanism in asphalt concrete pavement structures. It is one of the main reasons for large road maintenance and rehabilitation expenditures, as well as reduced user comfort and increased fuel consumption due to high road roughness. The resistance of the pavement to this distress mechanism is dependent upon the ductility ...
  • Smart Columbus Systems Engineering Management Plan SEMP for Smart Columbus Demonstration Program
    Smart Columbus : Systems Engineering Management Plan (SEMP) for Smart Columbus Demonstration Program
    James, Robert ;
    Newton, Diane
    2018-01-16 | PDF
    The Smart City Demonstration Program is intended to improve access through expanded mobility options in major job centers, enhance visitor experience by better connecting visitors to transportation options, stimulate regional economic prosperity and compete globally through smart logistics, better connect Columbus residents to safe, reliable transp ...
  • INVESTIGATION OF SEISMIC PERFORMANCE AND DESIGN OF TYPICAL CURVED AND SKEWED BRIDGES IN COLORADO
    INVESTIGATION OF SEISMIC PERFORMANCE AND DESIGN OF TYPICAL CURVED AND SKEWED BRIDGES IN COLORADO
    Chen, Suren ;
    Mahmoud, Hussam
    2018-01-15 | PDF
    This report summarizes the analytical studies on the seismic performance of typical Colorado concrete bridges, particularly those with curved and skewed configurations. A set of bridge models with different geometric configurations derived from a prototype bridge selected in Denver area were studied. Some discussions about the connection modeling a ...
  • Coordinating Road Safety Reviews With Bicycle and Pedestrian Project Prioritization Final Report on Development and Implementation of a Guide for North Carolina Agencies
    Coordinating Road Safety Reviews With Bicycle and Pedestrian Project Prioritization: Final Report on Development and Implementation of a Guide for North Carolina Agencies
    Thomas, Libby ;
    Gelinne, Dan
    2018-01-12 | PDF
    Concerted, well-coordinated, and performance-driven efforts are needed by state and local agencies to achieve North Carolina’s strategic safety goals since pedestrians and bicyclists continue to experience a high injury and fatality rate in traffic crashes. This report summarizes the development of the North Carolina Pedestrian and Bicycle Road Saf ...
  • Mobility Case Studies Where Integrated Corridor Management Has Worked and Why
    Mobility Case Studies: Where Integrated Corridor Management Has Worked and Why
    Studnek, Jonathan R. ;
    Infinger, Allison E.
    2018-01-11 | PDF
    Background: Modifying the task load of Emergency Medical Services (EMS) personnel may mitigate fatigue, sleep quality and fatigue related risks. A review of the literature addressing task load interventions may benefit EMS administrators as they craft policies related to mitigating fatigue. We conducted a systematic review of the peer-reviewed lite ...
    Supporting Files
  • Vehicle Trajectory Reconstruction Using Conditional Random Fields
    Vehicle Trajectory Reconstruction Using Conditional Random Fields
    Dilip, Deepthi Mary ;
    Jabari, Saif Eddin
    2018-01-07 | PDF
    This paper presents a probabilistic approach to reconstruct vehicle trajectories from GPS probe data on arterials. By combining car-following concepts with machine learning algorithms, we overcome the drawbacks of pure statistical modeling to investigate the question of adequate probe penetration levels on single-lane roads. Although the parameters ...
  • Performance Measures for Public Participation Methods Final Report
    Performance Measures for Public Participation Methods : Final Report
    Griffin, Greg ;
    Stoeltje, Gretchen
    2018-01-01 | PDF
    Public engagement is an important part of transportation project development, but measuring its effectiveness is typically piecemealed. Performance measurement—described by the Urban Institute as the measurement on a regular basis of the results (outcomes) and efficiency of services or programs—is already widely used in the transportation field. Th ...
  • Characterization of Unbound Materials SoilsAggregates MechanisticEmpirical Pavement Design Guide MEPDG 2018
    Characterization of Unbound Materials (Soils/Aggregates) Mechanistic-Empirical Pavement Design Guide (MEPDG) [2018]
    Sebaaly, Peter E. ;
    Thavathurairaja, Jeyakaran
    2018-01-01 | PDF
    The resilient modulus is a critical engineering property used to characterize the unbound and subgrade materials in the AASHTO Mechanistic Empirical Pavement Design Guide (MEPDG) where a hierarchical approach is followed. Three levels of input are specified in the AASHTOWare Pavement ME design software. This includes direct measurement from the lab ...
  • Location of Warehouses and Environmental Justice Evidence From Four Metros in California
    Location of Warehouses and Environmental Justice: Evidence From Four Metros in California
    Giuliano, Genevieve ;
    Yuan, Quan
    2018-01-01 | PDF
    Warehousing activities generate substantial externalities that affect surrounding neighborhoods. Using data for four major metropolitan areas in California, Los Angeles, San Francisco, San Diego and Sacramento, this study tests the relationship between the spatial distribution of warehouses and disadvantaged neighborhoods. The results show that war ...
  • Highway Travel Time Estimation With Captured InVehicle WiFi Mac Addresses Mechanism Challenges Solutions and Applications
    Highway Travel Time Estimation With Captured In-Vehicle Wi-Fi Mac Addresses: Mechanism, Challenges, Solutions and Applications
    Li, Pengfei ;
    Mirchandani, Pitu B.
    2018-01-01 | PDF
    Passive sensing technologies have emerged to supplement the traffic performance measurement recently. One successful is the travel time estimation based on in-vehicle Bluetooth Media Access Control (MAC) address capturing and matching at different locations. In this paper, we present a novel approach to measuring the traffic performance on highways ...
  • Novel Machine Learning Methods for Accident Data Analysis
    Novel Machine Learning Methods for Accident Data Analysis
    Lin, Lei ;
    Wang, Qian
    2018-01-01 | PDF
    The field of traffic accident analysis has long been dominated by traditional statistical analysis. With the recent advances in data collection, storage and archival methods, the size of accident datasets has grown significantly. This in turn has motivated research on applying data mining and Machine Learning algorithms, which are specifically desi ...
  • Bureau of Transportation Statistics Fellowship MidYear Review
    Bureau of Transportation Statistics Fellowship: Mid-Year Review
    Farley, Laura M.
    ORCID ICON IMG
    2018-01-01 | PDF
    The Bureau of Transportation Statistics (BTS) Fellowships are post-graduate research and developmental opportunities at the U.S. Department of Transportation in Washington, DC.  The BTS’ Fellowship program is in it’s first rotation with five Fellows in the fields of librarianship, geographic information system (GIS), and cartography. Funding is pro ...
  • Hurricane Evacuation Modeling Using Behavior Models and ScenarioDriven Agentbased Simulations
    Hurricane Evacuation Modeling Using Behavior Models and Scenario-Driven Agent-based Simulations
    Zhu, Yuan ;
    Ozbay, Kaan
    2018-01-01 | PDF
    Transportation modeling and simulation play an important role in the planning and management of emergency evacuation. It is often indispensable for the preparedness and timely response to extreme events occurring in highly populated areas. Reliable and robust agent-based evacuation models are of great importance to support evacuation decision makin ...
  • Inventory of Youth Bicycle Education Programs
    Inventory of Youth Bicycle Education Programs
    Hamann, Cara J. ;
    Conrad, Alyssa
    2018-01-01 | PDF
    Bicycling comes with physical and environmental benefits and is an activity that is well-suited for children. Bicycling also has inherent risks and bicycling injuries pose a large health burden among school-age children. Increasing child bicycle safety education is an important piece to increasing child bicycle safety. There are numerous child bicy ...
  • Location of Warehouses and Environmental Justice Evidence From Four Metros in California Brief
    Location of Warehouses and Environmental Justice: Evidence From Four Metros in California [Brief]
    Giuliano, Genevieve ;
    Yuan, Quan
    2018-01-01 | PDF
    Warehousing activities generate substantial externalities that affect surrounding neighborhoods. Using data for four major metropolitan areas in California, Los Angeles, San Francisco, San Diego and Sacramento, this study tests the relationship between the spatial distribution of warehouses and disadvantaged neighborhoods. The results show that war ...
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