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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 5661 - 5680 of 36054 results
  • Automated Plate Recognition and Truck Trip Tracking
    Automated Plate Recognition and Truck Trip Tracking
    Han, Lee D. ;
    Zhang, Zhihua
    2019-06-01 | PDF
    This study sought to apply automated license plate recognition (ALPR) technology to track trucks trips. ALPR does not work perfectly in the U.S. because of the thousands of different designs, colors, shapes, fonts, etc. of license plate from different states. To overcome this, a class of machine learning algorithms were developed to help track truc ...
  • Development of Aggregate CharacteristicsBased Preventive Maintenance Treatments Using 3D Laser Imaging and Aggregate Imaging Technology for Optimized Skid Resistance of Pavements
    Development of Aggregate Characteristics-Based Preventive Maintenance Treatments Using 3D Laser Imaging and Aggregate Imaging Technology for Optimized Skid Resistance of Pavements
    Li, Joshua Q. ;
    Pittenger, Dominique
    2019-06-01 | PDF
    The objective of this study was to assess the skid resistance performance of pavements in Oklahoma following preventive maintenance treatments. The assessment method employed herein was based on physical aggregate properties and economics in an optimal manner. Several state-of-the-art laboratory and field instruments were used to collect data on ag ...
  • MASH Test 311 Evaluation of Modified TxDOT Round Wood Post Guardrail System
    MASH Test 3-11 Evaluation of Modified TxDOT Round Wood Post Guardrail System
    Bligh, Roger P. ;
    Kuhn, Darrell L.
    2019-06-01 | PDF
    The purpose of the testing reported herein was to assess the performance of the free-standing single slope concrete barrier (SSCB) with cross-bolt connections according to the safety-performance evaluation guidelines included in American Association of State Highway and Transportation Officials’ Manual for Assessing Safety Hardware (MASH) for Test ...
  • Audubon Parkway Slab Lifting at MP 2275 Bridge Approach and Departure Settlement
    Audubon Parkway Slab Lifting at MP 22.75 — Bridge Approach and Departure Settlement
    Scully, Tim C.
    2019-06-01 | PDF
    The approach/departure Portland Cement Concrete (PCC) panels on the eastbound and westbound side of Audubon Parkway at MP 22.75 over route KY 2120 began to exhibit settlement and cracking in a few locations, which created an uncomfortable ride for motorists. To address this problem, the Kentucky Transportation Cabinet (KYTC) contracted with MasterD ...
  • Monitoring and Habitat Assessment of Declining Bumble Bees in Roadsides in the Twin Cities Metro Area of Minnesota
    Monitoring and Habitat Assessment of Declining Bumble Bees in Roadsides in the Twin Cities Metro Area of Minnesota
    Evans, Elaine ;
    Boone, Michelle
    2019-06-01 | PDF
    Several bumble bee species have declined dramatically, including the endangered rusty-patched bumble bee, Bombus affinis. Roadsides offer a unique opportunity to increase habitat for these declining species. The objectives of this study are to: (1) characterize the bumble bee community and floral availability within roadsides in the Minneapolis and ...
  • CostBenefit Analysis of the Effectiveness of Crack Sealing Techniques
    Cost/Benefit Analysis of the Effectiveness of Crack Sealing Techniques
    Barman, Manik ;
    Munch, Jared
    2019-06-01 | PDF
    Crack sealing is an important preventive treatment in the pavement preservation program. To achieve a cost-effective crack seal, it is important to select a proper crack sealing method. While Minnesota usually seals cracks in asphalt pavements, there is no clear consensus on the most appropriate crack sealing method for a specific job. This study f ...
    Supporting Files
  • Characterizing PhaseCenter Motion of GNSS Antennas Used in HighAccuracy Positioning
    Characterizing Phase-Center Motion of GNSS Antennas Used in High-Accuracy Positioning
    Dave, Aditya ;
    Saborio, Ricardo
    2019-06-01 | PDF
    Emerging transportation applications require positioning solutions with accuracy of a few centimeters. Current Global Navigation Satellite Systems (GNSS), such as GPS, GLONASS, and Galileo are, in some instances, capable of providing this level of accuracy. Real-Time Kinematic (RTK) techniques can generate solutions accurate to a few centimeters in ...
  • Collision Diagram Builder Phase II Corridor Edition
    Collision Diagram Builder: Phase II Corridor Edition
    Tarko, Andrew P. ;
    Thomaz, Jose E.
    2019-06-01 | PDF
    The Collision Diagram Builder–Corridor Edition (Corridor CDB) is a tool developed by the Center for Road Safety at the request of the Indiana Department of Transportation. The primary objective of the tool is to expand the existing Collision Diagram Builder to make it useful for analyzing spatial patterns of various types of crashes at multiple int ...
  • Guide for the Selection of Rapid Repair Systems for EarthquakeDamaged Reinforced Concrete Bridge Columns
    Guide for the Selection of Rapid Repair Systems for Earthquake-Damaged Reinforced Concrete Bridge Columns
    Sneed, Lesley H. ;
    Fraioli, Giacomo
    2019-06-01 | PDF
    This guide addresses the selection of systems for rapidly repairing earthquake-damaged reinforced concrete bridge columns with different types and levels of damage. Recent studies in the technical literature on repair have demonstrated that different techniques can be a viable option for restoring the use of earthquake-damaged RC bridge columns, ev ...
  • Best Practices for Pavement Restoration of Open Cut Utility InstallationsRepairs on Local Roadways in Northern Ohio
    Best Practices for Pavement Restoration of Open Cut Utility Installations/Repairs on Local Roadways in Northern Ohio
    Robbins, Mary ;
    Green, Roger
    2019-06-01 | PDF
    Local public agencies often face the challenge of repairing their pavements after the installation or repair of subsurface utilities in the roadway. While minimizing the need to disturb the in-service pavements through advanced planning and coordination with other planned roadway work is ideal, open utility cuts are often unavoidable. The performan ...
  • Project Progress Tracking Using Lidar and 4D Design Models
    Project Progress Tracking Using Lidar and 4D Design Models
    Turkan, Yelda ;
    Olsen, Michael J.
    2019-06-01 | PDF
    Accurate data collected from on-going construction projects assists project field engineers with tracking the progress of construction work. The comparison of as-planned schedules against the as-built status of construction enables the involved parties to determine project performance. Periodic monitoring of project performance enables timely ident ...
  • Key Enhancements to the WFRCMAG Conventional FourStep Travel Demand Model
    Key Enhancements to the WFRC/MAG Conventional Four-Step Travel Demand Model
    Ewing, Reid ;
    Park, Keunhyun
    2019-06-01 | PDF
    Conventional four-step travel demand models are used by nearly all metropolitan planning organizations (MPOs), state departments of transportation, and local planning agencies, as the basis for long-range transportation planning in the United States. In the simplest terms, the four-step model proceeds from trip generation, to trip distribution, to ...
  • Assessing the Impact of Game Day Schedule and Opponents on Travel Patterns and Route Choice using Big Data Analytics
    Assessing the Impact of Game Day Schedule and Opponents on Travel Patterns and Route Choice using Big Data Analytics
    Sharma, Anuj ;
    Ahsani, Vesal
    2019-06-01 | PDF
    The transportation system is crucial for transferring people and goods from point A to point B. However, its reliability can be decreased by unanticipated congestion resulting from planned special events. For example, sporting events collect large crowds of people at specific venues on game days and disrupt normal traffic patterns. The goal of this ...
  • Reinforced Concrete Foundation Remote Monitoring Summary
    Reinforced Concrete Foundation Remote Monitoring [Summary]
    Kopp, Brian ;
    Aceros, Juan
    2019-06-01 | PDF
    University of North Florida researchers investigated the use of embedded sensors to monitor reinforcing steel for corrosion.
  • Particle Dynamics Model for Hurricane Evacuation and Fuel Shortage Model Based Policy Analysis
    Particle Dynamics Model for Hurricane Evacuation and Fuel Shortage: Model Based Policy Analysis
    Namilae, Sirish ;
    Liu, Dahai
    2019-06-01 | PDF
    The purpose of this study is to examine the various factors that affect fuel shortage during hurricane evacuation and develop strategies to mitigate it. Fuel Shortage during hurricane Irma is modelled as contagion. The authors use the data accumulated by Gasbuddy, a free crowd sourced data application, and employ parameter identification technique ...
  • State Highway 5 Mount Evans Road Summit Lake Wetland and Hydrology Study Summit Lake Wetland Study
    State Highway 5 (Mount Evans Road) Summit Lake Wetland and Hydrology Study (Summit Lake Wetland Study)
    Shaw, Jeremy R. ;
    Cooper, David J.
    2019-06-01 | PDF
    Due to concerns that the hydrologic regime of the wetland complex in and around Summit Lake Park has been significantly altered by development of State Highway 5 (SH 5), a field study of the hydrology, soils, and vegetation above and below the roadway was initiated in 2018. The objectives of this study are to investigate the natural hydrologic proc ...
  • Alternative Stormwater Compliance Approaches on GDOT RightofWay
    Alternative Stormwater Compliance Approaches on GDOT Right-of-Way
    Burns, Susan E
    ORCID ICON IMG
    2019-06-01 | PDF
    The objectives of this study were to evaluate the field performance of stormwater best management practices (BMPs) and perform a statistical analysis on the impact of dimensions of sand filter BMPs on contaminant treatment. Some of the pertinent conclusions from this study are: (1) the combination dry swale/sand filter successfully treated turbidit ...
  • Incorporation of Wildlife Crossings Into TxDOTs Projects and Operations
    Incorporation of Wildlife Crossings Into TxDOT’s Projects and Operations
    Loftus-Otway, Lisa ;
    Jiang, Nan
    2019-06-01 | PDF
    Each year close to 8,000 crashes involving wild or domestic animals are reported in Texas. Roughly 20 people die each year on Texas roadways in these crashes, many more sustain injuries, and thousands of animals lose their lives. Reduction of animal-vehicle collisions (AVCs), especially wildlife-vehicle collisions (roughly 70% of the total AVC coun ...
  • Dissecting the Safety Benefits of Protected Intersection Design Features
    Dissecting the Safety Benefits of Protected Intersection Design Features
    Christofa, Eleni ;
    Knodler Jr., Michael A.
    2019-06-01 | PDF
    Protected intersections are an integral component of Complete Streets and are used to facilitate safe crossings for bicyclists and pedestrians at intersections. Their placement is ideal after segments with protected bike lanes where drivers might not be aware of bicyclists’ presence. Protected intersections have the ability to increase drivers’ awa ...
  • Disc Shaped Compact Tension DCT Specifications Development for Asphalt Pavement
    Disc Shaped Compact Tension (DCT) Specifications Development for Asphalt Pavement
    Dave, Eshan V. ;
    Oshone, Mirkat
    2019-06-01 | PDF
    The disc-shaped compact tension (DCT) fracture energy test has been shown to discriminate between asphalt mixtures with respect to their thermal cracking potential. This research refines the DCT fracture energy testing procedure, identifies needed adjustments in asphalt mixture to increase fracture energy, determines the suitability of DCT-test-bas ...
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