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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 4721 - 4740 of 36908 results
  • 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 ...
  • 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 ...
  • Comparison of Standard Penetration Test SPT Nvalue with Alternative Field Test Methods in Determining Moduli for Settlement Predictions
    Comparison of Standard Penetration Test (SPT) N-value with Alternative Field Test Methods in Determining Moduli for Settlement Predictions
    Chopra, Manoj ;
    Arboleda-Monsalve, Luis G.
    2020-09-01 | PDF
    In the determination of immediate settlements, the stiffness of the soil is a critical parameter. The selected value of the modulus of elasticity is typically obtained from published correlations using blow counts from standard penetration tests and tip or skin friction resistances from cone penetration tests. Other methods include the use of dilat ...
  • Data Management and Analytics for UF Smart Testbed
    Data Management and Analytics for UF Smart Testbed
    Banerjee, Tania ;
    Mahajan, Dhruv
    2020-09-01 | PDF
    We describe the data collection, management mechanisms, and analysis mechanisms for data collected from the ISTREET testbed, which comprises selected roads on the University of Florida campus and adjoining City of Gainesville roads. The test bed is instrumented with roadside units that deliver a variety of data about traffic. In this project, we pr ...
  • Is the Transit Industry Prepared for the Cyber Revolution? Policy Recommendations to Enhance Surface Transit Cyber Preparedness [supporting datasets]
    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 ...
    Dataset Supporting Files
  • Development of IDOTs Proposed Smoothness Specification Based on the International Roughness Index
    Development of IDOT’s Proposed Smoothness Specification Based on the International Roughness Index
    Lee, Hyung S ;
    Vavrik, William
    2020-09-01 | PDF
    The existing smoothness specification implemented by the Illinois Department of Transportation (IDOT) was based on profile-index measurement, which was also widely used by other agencies. There is a national and international trend, however, toward using the international roughness index (IRI) as a standard smoothness index for pavement management ...
  • Effects of Tree Canopy on Pavement Condition Safety and Maintenance Phase 2
    Effects of Tree Canopy on Pavement Condition, Safety and Maintenance – Phase 2
    Naik, Bhaven ;
    Matlack, Glenn
    2020-09-01 | PDF
    Tree canopies are common alongside and above rural highways in Ohio. Consequently, ODOT wants to know how a tree canopy affects pavement condition and road safety. A review of published research conducted for Phase I of this study suggested that tree canopies extend the life of asphalt pavement and improve road safety. Road managers and highway off ...
  • Will Ride-Hailing Enhance Mobility for Older Adults? A California Survey [supporting dataset]
    Shirgaokar, Manish ;
    Agrawal, Asha Weinstein
    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 ...
    Dataset Supporting Files
  • Special Legislation and Megaregion Transit Planning
    Special Legislation and Megaregion Transit Planning
    Gallun, Susanna ;
    Hunn, Alexander
    2020-09-01 | PDF
    Transportation law in many states has become highly inconsistent between jurisdictions, making cooperation more challenging. MRs present an opportunity to accommodate equity, congestion, and mobility issues by providing a connected multimodal environment where multiple modes can combine to respond with flexibility to changing needs. One way to impr ...
  • Balanced Asphalt Concrete MIX Performance in Utah Phase IV Cracking Indices for Asphalt Mixtures
    Balanced Asphalt Concrete MIX Performance in Utah, Phase IV: Cracking Indices for Asphalt Mixtures
    VanFrank, Kevin ;
    Romero, Pedro
    2020-09-01 | PDF
    The Utah Department of Transportation (UDOT) has been seeking a test to balance its asphalt mixes against the stiffness encouraged by the Hamburg Wheel Tracking test and the use of recycled asphalt pavement (RAP). Without this balance, the over-stiffening of mixes has led to premature cracking. Two configurations of cracking tests have been studied ...
  • Log Movement in the Superior Region Rate and Capacity Based Analysis of Modal Shares
    Log Movement in the Superior Region - Rate and Capacity Based Analysis of Modal Shares
    Lautala, Pasi ;
    Zhang, Kuilin
    2020-09-01 | PDF
    For the last two decades, the rail system in the Superior (Project) region (Upper Peninsula of Michigan and northern parts of Wisconsin and Minnesota) has witnessed declining freight volumes. This has specifically impacted forest products industry, one of the largest users of freight rail transportation in the region. Log movements by rail from agg ...
  • Historic Streetcar Systems of Colorado
    Historic Streetcar Systems of Colorado
    Litvak, Dianna ;
    Raath, Ethan
    2020-09-01 | PDF
    Transportation impacts to historic streetcar lines in Denver and other communities in Colorado are often unforeseen given that many tracks lay underneath paved streets and are not well documented. This results in frequent unanticipated discoveries during construction of publicly assisted transportation improvement projects in Colorado. A historic c ...
  • Colloidal Silica Cement Enhancing Admixture Product Evaluation
    Colloidal Silica: Cement Enhancing Admixture Product Evaluation
    Halsey, Lieska ;
    Hansen, David
    2020-09-01 | PDF
    This research investigated the potential to use colloidal silica as a cement enhancing admixture in NDOT’s concrete mix designs. Engineers had two objectives in this study: 1. Determine if CS can enhance high, early strength for use in patching and repairs. 2. Determine if CS can maintain or improve ASR mitigation as F-ash content is decreased.
  • Vision Zero Risk Analysis Model ODN RAM Model Documentation
    Vision Zero Risk Analysis Model: ODN RAM Model Documentation
    Nadeau, Carrie Anne
    2020-09-01 | PDF
    Open Data Nation (ODN) worked with Howard University, on behalf of the District Department of Transportation (DDOT), to construct a predictive model to anticipate which roads are most likely to have traffic crashes in Washington, DC. This work is in support of the city’s broader Vision Zero initiative and its deliverables are valuable tools for cit ...
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