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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 4281 - 4300 of 36019 results
  • Is the Transit Industry Prepared for the Cyber Revolution Policy Recommendations to Enhance Surface Transit Cyber Preparedness
    Is the Transit Industry Prepared for the Cyber Revolution? Policy Recommendations to Enhance Surface Transit Cyber Preparedness
    Belcher, Scott ;
    Belcher, Terri
    2020-09-01 | PDF
    The intent of this study is to assess the readiness, resourcing, and structure of public transit agencies to identify, protect from, detect, respond to, and recover from cybersecurity vulnerabilities and threats. Given the multitude of connected devices already in use by the transit industry and the vast amount of data generated (with more coming o ...
  • Summary of Illinois Regulations and Review of Treatment Alternatives for Contaminated Soils in RightofWays
    Summary of Illinois Regulations and Review of Treatment Alternatives for Contaminated Soils in Right-of-Ways
    Hohner, Amanda K. ;
    Pelletier, Austin
    2020-09-01 | PDF
    Industrial activities and vehicular transportation often pollute roadside soils with toxic mixtures of petroleum derivatives, combustion byproducts, and metal contaminants. Of these contaminants, semi-volatile organic compounds and metallic inorganics are commonly present at levels exceeding regulatory limits and require special handling if found i ...
  • Internal Friction Angle of Sands With High Fines Content Research Project Capsule 211GT
    Internal Friction Angle of Sands With High Fines Content: Research Project Capsule [21–1GT]
    Abu-Farsakh, Murad Y.
    2020-09-01 | PDF
    There are three main objectives of this study. The first is to evaluate the effect of fines content on the value of internal friction angle of sand soils mixed with fines typically encountered in Louisiana. The second objective is to evaluate the effect of fines content on the interface friction angle between sand soils mixed with fines and both co ...
  • Forecasting Bicycle Facility Demand
    Forecasting Bicycle Facility Demand
    Machemehl, Randy ;
    Hall, Jenny
    2020-09-01 | PDF
    The objective of this report is to (1) evaluate current and past predictive models that are used for forecasting off-street bicycle facility demand; (2) create a statistical model from locally sourced data that is able to connect bicycle facility counts to time, demographic data, and weather data; (3) conclude if the statistical model can be applie ...
  • Will RideHailing Enhance Mobility for Older Adults A California Survey
    Will Ride-Hailing Enhance Mobility for Older Adults? A California Survey
    Agrawal, Asha Weinstein ;
    Shirgaokar, Manish
    2020-09-01 | PDF
    Ride-hailing services such as Lyft and Uber offer a potential mobility option for the growing numbers of aging Californians who risk social and economic isolation if they cannot drive for health or financial reasons. They could also serve older adults who currently have mobility options but would prefer a ride-hailing alternative for at least some ...
  • The Role of Bus Stop Features in Facilitating Accessibility
    The Role of Bus Stop Features in Facilitating Accessibility
    Bartholomew, Keith ;
    Kim, Ja Young
    2020-09-01 | PDF
    Although transit decision-makers and riders generally favor improving bus stops by adding shelters, benches, and similar features, it is unclear the impact such features have on transit demand, and there has been little research that measures these impacts. This study examines the link between stop improvements and changes in stop-level boardings o ...
  • Implementing Revisions to the Allowable Maximum Recycled Binder Ratio RBR Specification
    Implementing Revisions to the Allowable Maximum Recycled Binder Ratio (RBR) Specification
    Filonzi, Angelo ;
    Lee, Sang Ki
    2020-09-01 | PDF
    An increase in the use of reclaimed asphalt pavement (RAP) in the design and construction of new roads must not come at the expense of reduced durability or life cycle cost of flexible pavements. In Texas, current mixture design specifications allow the use of a binder with lower high temperature grade in lieu of the specified binder when incorpora ...
  • Alkaliactivated Materials Environmental Preliminary Assessment for US Roadway Applications
    Alkali-activated Materials: Environmental Preliminary Assessment for U.S. Roadway Applications
    Kurtis, Kimberly E ;
    Lolli, Francesca
    2020-09-01 | PDF
    The capital investment in the U.S. for construction and maintenance of the infrastructure road network is on the order of $100 billion/year. On average, investments in Organization for Economic Cooperation and Development (OECD) countries are likely to stabilize, while China will face an exponential growth of investments for new infrastructures dri ...
  • Public InvolvementEducation on Alternative IntersectionInterchange Designs
    Public Involvement/Education on Alternative Intersection/Interchange Designs
    Rodgers, Michael O. ;
    Gbologah, Franklin
    2020-09-01 | PDF
    Given the recent introduction of many innovative designs, still relatively limited material exists that explains the concepts, tradeoffs, and benefits underlying such innovative intersection designs in a form accessible to the general public. This project was designed to both test the effectiveness of existing GDOT public information materials and ...
  • Phase III Smart Proximity Work Zone Safety Technology Deployment
    Phase III: Smart Proximity Work Zone Safety Technology Deployment
    Cho, Yong Kwon ;
    Kim, Kinam
    2020-09-01 | PDF
    The main objective of this research is to develop and deploy a low-cost and scalable smart Internet of Things(IoT) proximity alert system using the IoT mobile sensing technology for alerting workers and equipment operators in proximity hazard situations in highway work zones. This research consisted of 5 field tests, including a preliminary test an ...
  • Evaluation of the Effectiveness of Wildlife Guards and Right of Way Escape Mechanisms for Large Ungulates in Arizona
    Evaluation of the Effectiveness of Wildlife Guards and Right of Way Escape Mechanisms for Large Ungulates in Arizona
    Gagnon, Jeffrey W. ;
    Loberger, Chad D.
    2020-09-01 | PDF
    Wildlife-vehicle collisions (WVC) can cause motorist fatalities, injuries, and property damage to vehicles. To address safety concerns and reduce WVC in Arizona, the Arizona Department of Transportation (ADOT) has installed fencing in areas with high WVC incidence to limit ungulate access to the right of way (ROW) and to funnel animals to structure ...
  • Develop and Evaluate Performance Measures for Intelligent Transportation Systems ITS in Louisiana Research Project Capsule 214SS
    Develop and Evaluate Performance Measures for Intelligent Transportation Systems (ITS) in Louisiana: Research Project Capsule [21–4SS]
    Codjoe, Julius
    2020-09-01 | PDF
    The primary objective of this project is to develop a set of performance measures for each existing ITS application in Louisiana and then collect data and evaluate and quantify the benefits achieved through their implementation across transportation planning, traffic operation, safety, environmental quality and sustainability and any other areas th ...
  • Productive ReUse of Savannah River Dredge Material
    Productive Re-Use of Savannah River Dredge Material
    Kurtis, Kimberly E ;
    Burns, Susan E.
    2020-09-01 | PDF
    Approximately 6 million m3 of river sediment is dredged from the Savannah River annually in order to keep the river navigable. While this material is currently being stored in facilities located riverside, the long-term viability of these facilities is in question due to changes in planned land use. As an alternative to storing or relocating these ...
  • Street Network Connectivity Traffic Congestion and Traffic Safety
    Street Network Connectivity, Traffic Congestion, and Traffic Safety
    Ewing, Reid ;
    Choi, Dong-ah
    2020-09-01 | PDF
    Over the last two decades, street connectivity has gained substantial attention in urban planning circles as a critical environmental aspect to achieve many community goals. Despite advocacy for interconnected areas, the literature on the effects of street connectivity on transportation outcomes is still intuitive. In this study, we examine the eff ...
  • Activity Sequencing Logics Using Daily Work Report Data
    Activity Sequencing Logics Using Daily Work Report Data
    Jeong, H. David ;
    Alikhani, Hamed
    2020-09-01 | PDF
    Accurate and reliable project duration estimation is highly dependent upon two major components; a) reasonable production rate estimation of major work items, and b) logical sequencing of those work items. The phase I of the study developed an MS Excel-based production rate estimation tool (PRET). The phase II (this project) has developed construct ...
  • Integrated Corridor Management ICM Concept Exploration for Suffolk County Department of Public Works SCDPW and New York State Department of Transportation NYSDOT Region 10
    Integrated Corridor Management (ICM) Concept Exploration for Suffolk County Department of Public Works (SCDPW) and New York State Department of Transportation (NYSDOT) Region 10
    Muthuswamy, Satya ;
    Brueckner, Paul
    2020-09-01 | PDF
    This report documents the Buffalo-Niagara Integrated Corridor Management (BNICM) deployment planning study for portions of the region’s freeway network. Integrated Corridor Management (ICM) provides technology-enabled transportation management and operations strategies that seek to optimize the use of existing infrastructure. Following a presentati ...
  • Waste Management of Highway Right of Way Areas in Southeast Georgia
    Waste Management of Highway Right of Way Areas in Southeast Georgia
    Cubas, Francisco J ;
    Manoosingh, Celine
    2020-09-01 | PDF
    Maintenance of highway right of way (ROW) areas has become challenging during the last years due to the high cost, and little to no economic return associated with disposing vegetation waste generated on highways across Georgia. In response, a study was done to examine the feasibility of using ROW areas to generate biomass for energy production. Pa ...
  • Analyzing Cycling Behavior During Different Time Periods Using Crowdsourced Bicycle Data
    Analyzing Cycling Behavior During Different Time Periods Using Crowdsourced Bicycle Data
    Fan, Wei (David) ;
    Lin, Zijing
    2020-09-01 | PDF
    The objective of this report is to analyze the cycling behavior during different time periods in the City of Charlotte using crowdsourced bicycle data collected from Strava smartphone application, and compare different cycling behavior to provide specific recommendations accordingly on what can be done to help increase bicycle volume and build a be ...
  • Urban Transportation System Flood Vulnerability Assessment with Special Reference to Low Income and Minority Neighborhoods
    Urban Transportation System Flood Vulnerability Assessment with Special Reference to Low Income and Minority Neighborhoods
    Crosson, Courtney ;
    Tong, Daoqin
    2020-09-01 | PDF
    A flood vulnerability assessment of the City of Tucson, Arizona’s transportation systems was conducted with special reference to low-income and minority neighborhoods. Short-term flooding from extreme storm events pose a serious challenge to transportation system reliability and emergency response in cities across the United States. This problem, w ...
  • Deficiencies in Public Transit Accessibility of Healthcare Facilities in Chicago
    Deficiencies in Public Transit Accessibility of Healthcare Facilities in Chicago
    Metaxatos, Paul ;
    Sriraj, P S
    2020-09-01 | PDF
    Public transportation has the potential to impact the accessibility of individuals to healthcare facilities and affect the quality of life and the livability of a community. It is critical, therefore, to understand the service efficiency of public transportation as a mode of access to healthcare facilities. In this study, the authors develop perfor ...
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