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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 4541 - 4560 of 36908 results
  • Development of a Balanced Mix Design Method in Oregon
    Development of a Balanced Mix Design Method in Oregon
    Coleri, Erdem ;
    Sreedhar, Shashwath
    2020-11-01 | PDF
    According to recent surveys conducted with state Department of Transportations (DOTs) and asphalt contractors, commonly used asphalt mixture properties are not directly reflecting the long-term performance of asphalt mixtures. In addition, there are several new additives, polymers, rubbers, and high-quality binder types incorporated into asphalt mi ...
  • Rails to Resilience: Evaluating New Orleans and Baton Rouge Rail Terminals and Transit Links [supporting datasets]
    Tolford, Tara M. ;
    Amdal, James
    2020-11-01 | PDF
    This study evaluates the multimodal linkages to and opportunities for proposed terminal sites for a potential future passenger rail connection between Baton Rouge and New Orleans, Louisiana. The project included a comprehensive analysis of recent planning processes and documents and distribution of a statewide survey aimed at understanding ridershi ...
    Dataset Supporting Files
  • Engineered Geopolymer Composites EGCs for Sustainable Transportation Infrastructure
    Engineered Geopolymer Composites (EGCs) for Sustainable Transportation Infrastructure
    Arce, Gabriel A ;
    Hassan, Marwa
    2020-11-01 | PDF
    The objective of this study was to develop novel Engineered Geopolymer Composite (EGC) materials implementing locally available ingredients to produce practical and cost-effective EGCs for repair and new construction of transportation infrastructure in the region. To this end, geopolymers (GPs) were synthesized by alkali activation of metakaolin (M ...
  • Evaluation of Asphalt Mixtures’ Resistance To Cement-Treated Base (CTB) Reflective Cracking in the Laboratory [supporting datasets]
    Sadek, Husam ;
    Hassan, Marwa
    2020-11-01 | PDF
    The primary objective of this project is to propose a laboratory setup to test and evaluate an asphalt mixture layer on top of a simulated Cement-Treated Base (CTB) layer against reflective cracking. An in-depth literature review on the experimental studies that were conducted throughout the world to investigate the resistance of asphalt mixtures t ...
    Dataset Supporting Files
  • Evaluation of Bagasse Ash As Cement and Sand Replacement for the Production of Engineered Cementitious Composites ECC
    Evaluation of Bagasse Ash As Cement and Sand Replacement for the Production of Engineered Cementitious Composites (ECC)
    Arce, Gabriel A ;
    Hassan, Marwa M.
    2020-11-01 | PDF
    The objective of this study was to develop novel Engineered Cementitious Composites (ECC) materials implementing sugarcane bagasse ash (SCBA). To this end, the effects on the mechanical and physical properties of ECC materials of: (1) Louisiana raw SCBA (RBA) as a partial and complete replacement of sand (i.e., class S mixtures); (2) Louisiana post ...
  • Evaluating the Costs and Benefits of Snow Fences in Illinois Phase 2
    Evaluating the Costs and Benefits of Snow Fences in Illinois: Phase 2
    Qi, Yan ;
    Fries, Ryan N
    2020-11-01 | PDF
    Serving as a windbreak, properly sited and designed snow fences have been proven effective in mitigating the negative impacts of blowing snow. To achieve the best snow-control effects, the ideal locations for snow fences are usually outside the roadway right-of-way. Few efforts have been made to examine the economic efficiency of snow fences and ex ...
  • Evaluation of Bagasse Ash As Cement and Sand Replacement for the Production of Engineered Cementitious Composites (ECC) [supporting datasets]
    Arce, Gabriel A ;
    Hassan, Marwa M.
    2020-11-01 | PDF
    The objective of this study was to develop novel Engineered Cementitious Composites (ECC) materials implementing sugarcane bagasse ash (SCBA). To this end, the effects on the mechanical and physical properties of ECC materials of: (1) Louisiana raw SCBA (RBA) as a partial and complete replacement of sand (i.e., class S mixtures); (2) Louisiana post ...
    Dataset Supporting Files
  • Platooning for Improved Safety and Efficiency of SemiTrucks PISES III
    Platooning for Improved Safety and Efficiency of Semi-Trucks (PISES – III)
    Viswanathan, Venkatasubramanian ;
    Shankar, Varun
    2020-11-01 | PDF
    In fluid physics, data-driven models to enhance or accelerate solution methods are becoming increasingly popular for many application domains, such as alternatives to turbulence closures, system surrogates, or for new physics discovery. In the context of reduced order models of high-dimensional time-dependent fluid systems, machine learning methods ...
  • Diverted Traffic Measurement
    Diverted Traffic Measurement
    Gudishala, Ravindra ;
    Wilmot, Chester
    2020-11-01 | PDF
    Most people in the US prefer to travel on freeways, but when there is congestion they divert onto local routes to avoid travel delay. This study measures the traffic diversion induced by an increase in congestion on the I-10 freeway in Baton Rouge during congestion, using a Bluetooth Detection System. The main objective of the study was to identify ...
  • CostBenefit Analysis of Novel Access Modes A Case Study in the San Francisco Bay Area
    Cost-Benefit Analysis of Novel Access Modes: A Case Study in the San Francisco Bay Area
    Broaddus, Andrea ;
    Rodier, Caroline
    2020-11-01 | PDF
    The first-mile, last-mile problem is a significant deterrent for potential transit riders, especially in suburban neighborhoods with low density. Transit agencies have typically sought to solve this problem by adding parking spaces near transit stations and adding stops to connect riders to fixed-route transit. However, these measures are often onl ...
  • Bridge Deck Inspection Using Small Unmanned Aircraft Systems Based Airborne Imaging Techniques [supporting datasets]
    Zhang, Su ;
    Baros, Shirley V
    2020-11-01 | PDF
    As one of critical components of a transportation infrastructure system, bridges are very important to a country’s economy because they provide passage over physical obstacles to substantially reduce travel time and travel cost. Similar to other types of transportation infrastructure, bridges deteriorate over time. Therefore, bridges should be rout ...
    Dataset Supporting Files
  • Preventive Maintenance and Inspection for Traffic Signals Roadway Lighting and Overhead Sign Structures
    Preventive Maintenance and Inspection for Traffic Signals, Roadway Lighting and Overhead Sign Structures
    CTC & Associates LLC
    2020-11-01 | PDF
    The MnDOT Asset Management Program and Office of Traffic Engineering are seeking information about the state of the practice in preventive maintenance and inspection strategies designed to extend the service life of traffic signal, roadway lighting and overhead sign support structures. MnDOT is particularly interested in the expected service lives ...
  • Calibrating the Highway Safety Manual Crash Prediction Models for Urban and Suburban Arterial Intersections in Kansas
    Calibrating the Highway Safety Manual Crash Prediction Models for Urban and Suburban Arterial Intersections in Kansas
    Dissanayake, Sunanda ;
    Karmacharya, Rijesh
    2020-11-01 | PDF
    Kansas experienced about 60,000 crashes annually from 2013 to 2016, 25% of which occurred at urban intersections. Hence, urban intersections in Kansas are one of the critical locations in terms of frequency of crashes. Therefore, an accurate prediction of crashes at these locations would help identify critical intersections with a higher probabilit ...
  • Evaluation of Use of Crushed Hydraulic Cement Concrete CHCC as an Additive To Base CourseSubbase Material
    Evaluation of Use of Crushed Hydraulic Cement Concrete (CHCC) as an Additive To Base Course/Subbase Material
    Tanyu, Burak F ;
    Abbaspour, Aiyoub
    2020-11-01 | PDF
    All new pavement systems constructed under the jurisdiction of the Virginia Department of Transportation (VDOT) require drainage systems. These drainage systems are constructed with perforated pipe and coarse aggregate that surrounds the pipe. Additionally, to separate the coarse aggregate from the base course and to create a filter, the drainage s ...
  • Investigation of Performance of Skewed Reinforcing in InvertedT Bridge Caps
    Investigation of Performance of Skewed Reinforcing in Inverted-T Bridge Caps
    Wang, Jiaji ;
    Oz, Yagiz
    2020-11-01 | PDF
    Reinforced concrete inverted-T bridge caps (ITBCs) have been widely used in the bridges in the United States as they are aesthetically pleasing and offer a practical means to increase vertical clearance. Many of the ITBCs are skewed when two roads are not aligned perpendicularly and exceed the 45-degree angle of the construction requirements. The T ...
  • Effects of Surface Treatments on National Bridge Inventory Condition Ratings for Concrete Bridge Decks in Utah
    Effects of Surface Treatments on National Bridge Inventory Condition Ratings for Concrete Bridge Decks in Utah
    Guthrie, W Spencer ;
    De Leon, John T
    2020-11-01 | PDF
    The objectives of this research were to develop and analyze deterioration curves for bare concrete bridge decks and decks with specific treatments commonly used in Utah. The scope of this study was determined by the types and extent of electronically available data, including selected static inventory information; maintenance, rehabilitation, and r ...
  • Enhancing the Performance of Asphalt Mixtures Containing High RAP Content With the Use of Different WMA Technologies [supporting datasets]
    Sadek, Husam ;
    Hassan, Marwa
    2020-11-01 | PDF
    The production of Warm-mix asphalt mixtures in conjunction with reclaimed asphalt pavement (RAP) has received considerable interest in recent years for economic and environmental reasons. The primary objective of this project is to enhance the performance of asphalt mixtures containing RAP in Region 6 using different WMA technologies. In this proje ...
    Dataset Supporting Files
  • Highways and Wealth Distribution A Geospatial Analysis
    Highways and Wealth Distribution: A Geospatial Analysis
    Cohen, Jeffrey P ;
    Lownes, Nicholas
    2020-11-01 | PDF
    The objectives of this report are to (1) evaluate how the implementation of Interstate 84 (I-84) in Hartford, Connecticut impacted real estate values over the 20-30 year period spanning from the planning stages through the opening of the highway; (2) demonstrate visually how this wealth creation for homeowners varied in the city of Hartford, Connec ...
  • Evaluate the Uses and Technology for TruckMounted Attenuators
    Evaluate the Uses and Technology for Truck-Mounted Attenuators
    Finley, Melisa D. ;
    Ruback, Leonard
    2020-11-01 | PDF
    Mobile maintenance operations on multi-lane highways, such as pothole patching and sweeping, present unique safety challenges due to the highly variable conditions encountered. While the Ohio Department of Transportation and Ohio Turnpike currently have procedures for temporary traffic control for mobile maintenance operations, both agencies wanted ...
  • Autonomous Emergency Navigation to a Safe Roadside Location
    Autonomous Emergency Navigation to a Safe Roadside Location
    Furukawa, Tomonari ;
    Zuo, Lei
    2020-11-01 | PDF
    In this project, we developed essential modules for achieving the proposed autonomous emergency navigation function for an automated vehicle. We investigated and designed sensing solutions for safe roadside location identification, as well as control solutions for autonomous navigation to the identified location. Sensing capabilities are achieved b ...
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