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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 1901 - 1920 of 35865 results
  • Comparing Public Transportation Services for Rural States in the Upper Midwest and Great Plains Region Executive Summary Surcom Research Summary
    Comparing Public Transportation Services for Rural States in the Upper Midwest and Great Plains Region — Executive Summary [Surcom Research Summary]
    Mattson, Jeremy ;
    Quayson, Bright
    2023-05-01 | PDF
    This study compares the level of public transportation services provided in North Dakota to those of the surrounding states of South Dakota, Montana, Wyoming, Nebraska, and Greater Minnesota. Separate analyses are performed for rural and urban transit. Overall, North Dakota performs well by some measures and not as well by others, but the level of ...
  • Optimal Approach for Addressing Reinforcement Corrosion for Concrete Bridge Decks in Illinois Phase II
    Optimal Approach for Addressing Reinforcement Corrosion for Concrete Bridge Decks in Illinois — Phase II
    Gombeda, Matthew J ;
    Lallas, Zoe N
    2023-05-01 | PDF
    This report presents the expansion of a previously introduced life-cycle cost calculation framework for concrete bridge decks in Illinois. In addition to the alternative reinforcement options examined in the Illinois Center for Transportation and Illinois Department of Transportation project R27-SP49, two additional reinforcing bar types—stainless ...
  • Understanding Transit and Shared Mobility Preferences PostCOVID
    Understanding Transit and Shared Mobility Preferences Post-COVID
    Fan, Yingling
    2023-05-01 | PDF
    Since the COVID-19 pandemic, the use of public transit and shared transportation services has plummeted, including in Greater Minnesota. Social distancing measures, general discomfort or safety concerns have resulted in a 40% reduction in trips throughout the state. Urban transit agencies have experienced a 55% reduction in revenue while smaller tr ...
  • Advancing Equity in Accessibility and Travel Experiences The Role of Gender and Identity
    Advancing Equity in Accessibility and Travel Experiences: The Role of Gender and Identity
    Fan, Yingling ;
    Song, Ying
    2023-05-01 | PDF
    Gender can have a significant influence on people’s behaviors and experiences. Hence, excluding gender diversity in transportation research and practices can result in biased or incomplete understandings of issues and perceptions about transportation and quality of life. This study examined whether and how gender, in a broader sense, can result in ...
  • Annual North Dakota Elevator Marketing Report 20212022
    Annual North Dakota Elevator Marketing Report, 2021–2022
    Vachal, Kimberly ;
    Andersen, Jaclyn
    2023-05-01 | PDF
    The objective of this report is to provide a benchmark for elevator managers in assessing performance and supply a source for recognizing trends in the characteristics of North Dakota elevators. This report and the statistics mailed to individual elevators are presented as a source of information for elevator managers and those interested in the No ...
  • Cost Estimate of B vs C Grade Asphalt Binders
    Cost Estimate of B vs. C Grade Asphalt Binders
    Yan, Tianhao ;
    Marasteanu, Mihai
    2023-05-01 | PDF
    Polymer-modified binders (PMB) have been shown over the decades to improve the mechanical properties of asphalt mixtures compared to unmodified binders. Considering the higher initial cost of PMB, selecting the best alternative is very important, especially for local agencies given their limited budgets. A challenge in the materials selection proce ...
  • Feasibility Study Application of Steel Sheet Piles for the Abutment of WaterCrossing Bridges in Nebraska
    Feasibility Study: Application of Steel Sheet Piles for the Abutment of Water-Crossing Bridges in Nebraska
    Kim, Seunghee ;
    Eun, Jongwan
    2023-05-01 | PDF
    The overall goal of this study is to investigate the anticipated performance of steel sheet-pile bridge abutments to encourage its wider application to not only new construction but also repair and replacement of existing water-crossing bridges in Nebraska. For this purpose, this study first reviewed several bridge cases with axially loaded sheet p ...
  • Massachusetts Depth to Bedrock Project
    Massachusetts Depth to Bedrock Project
    Mabee, Stephen B ;
    Duncan, Christopher C
    2023-05-01 | PDF
    The depth to bedrock is perhaps one of the most important surfaces that is fundamental to many practical engineering and geological problems. Yet it is not well understood everywhere. Knowing the depth to bedrock for transportation projects not only influences cost but may also affect selection of the appropriate foundation system for a particular ...
  • Design and Detailing of Anchorages for Externally Bonded CFRP Summary
    Design and Detailing of Anchorages for Externally Bonded CFRP [Summary]
    Suksawang, Nakin
    2023-05-01 | PDF
    For over 20 years, the Florida Department of Transportation (FDOT) has used externally bonded carbon fber-reinforced polymer (CFRP) to repair concrete bridges damaged by over-height vehicles, corrosion, or to increase shear capacity. Recently, there has been an increase in CFRP repairs to increase the shear capacity of concrete bridges.
  • NYC DOT Curbside Level 2 EV Charging Pilot Evaluation Report
    NYC DOT Curbside Level 2 EV Charging Pilot: Evaluation Report
    New York (N.Y.). Department of Transportation  ...
    2023-05-01 | PDF
    In June 2021, the New York City Department of Transportation (NYC DOT), in partnership with Con Edison, launched the city’s first curbside electric vehicle (EV) charging pilot program. The pilot includes 100 on-street Level 2 chargers distributed across 35 locations in the five boroughs. Up to 20 additional chargers have been or are in the process ...
  • Development of a Traffic Management Decision Support Tool for Freeway Incident Traffic Management FITM Plan Deployment Phase 3 An Incident Duration and Impact Prediction IDIP System
    Development of a Traffic Management Decision Support Tool for Freeway Incident Traffic Management (FITM) Plan Deployment Phase 3: An Incident Duration and Impact Prediction (IDIP) System
    Huang, Yen-Lin ;
    Cheng, Yao
    2023-05-01 | PDF
    This phase of the study has finalized the innovative system for real-time prediction of a detected incident’s duration and its potential traffic impacts on both the subject freeway and its neighboring local streets due to the queues and resulting detouring off-ramp flows. With such information, highway agencies responsible for incident response and ...
  • Traffic Safety Facts 2021 Data Occupant Protection in Passenger Vehicles
    Traffic Safety Facts 2021 Data: Occupant Protection in Passenger Vehicles
    United States. Department of Transportation. National Highway Traffic Safety Administration
    2023-05-01 | National Transportation Statistics (NTS) | PDF
    Occupant protection discussed in this fact sheet includes seat belts, car seats for children under 5 years old, and frontal air bags in passenger vehicles. Passenger vehicles consist of passenger cars and light trucks (pickups, SUVs, and vans) with gross vehicle weight ratings (GVWRs) of 10,000 pounds or less. Vehicle occupants include drivers and ...
  • Traffic Safety Facts 2021 Research Note Distracted Driving in 2021
    Traffic Safety Facts 2021 Research Note: Distracted Driving in 2021
    United States. Department of Transportation. National Highway Traffic Safety Administration
    2023-05-01 | National Transportation Statistics (NTS) | PDF
    The National Highway Traffic Safety Administration works to reduce the occurrence of distracted driving and raise awareness of its dangers. This risky driving behavior poses a danger not only to vehicle occupants but pedestrians and pedalcyclists as well. Driver distraction is a specific type of driver inattention that occurs when drivers divert at ...
  • Traffic Safety Facts 2021 Data Children
    Traffic Safety Facts 2021 Data: Children
    United States. Department of Transportation. National Highway Traffic Safety Administration
    2023-05-01 | National Transportation Statistics (NTS) | PDF
    This fact sheet contains information on fatal motor vehicle traffic crashes based on data from the Fatality Analysis Reporting System (FARS) and non-fatal motor vehicle traffic crashes from the Crash Report Sampling System (CRSS). A change instituted with the release of 2020 data is rounding estimates to the nearest whole number instead of the near ...
  • Feasibility Study Application of Steel SheetPiles for the Abutment of WaterCrossing Bridges in Nebraska
    Feasibility Study: Application of Steel Sheet-Piles for the Abutment of Water-Crossing Bridges in Nebraska
    Kim, Seunghee ;
    Eun, Jongwan
    2023-05-01 | PDF
    The overall goal of this study is to investigate the anticipated performance of steel sheet-pile bridge abutments to encourage its wider application to not only new construction but also repair and replacement of existing water-crossing bridges in Nebraska. For this purpose, this study first reviewed several bridge cases with axially loaded sheet p ...
  • Domestic Airline Fares Consumer Report Fourth Quarter 2022 Passenger and Fare Information
    Domestic Airline Fares Consumer Report: Fourth Quarter 2022 Passenger and Fare Information
    United States. Department of Transportation
    2023-05-01 | Domestic Airline Fares Consumer Report | PDF
    Each month the Department of Transportation releases an Air Travel Consumer Report that includes information about various service quality elements, including flight delays, mishandled baggage, over sales, and a variety of other types of consumer complaints. In response to an increasing number of inquiries from consumers about domestic airline pric ...
  • Consultant Support for Intelligent Compaction and PaverMounted Thermal Profiling Projects in 20222023
    Consultant Support for Intelligent Compaction and Paver-Mounted Thermal Profiling Projects in 2022-2023
    Chang, George K ;
    Gilliland, Amanda
    2023-05-01 | PDF
    Due to the success of the MoDOT 2017-2021 Intelligent Compaction and Paver-Mounted Thermal Profiling (IC-PMTP) projects that demonstrate the paving quality improvements on numerous field projects, MoDOT has established a plan that includes additional IC-PMTP projects in 2022 and 2023. To ensure the continued success of the MoDOT IC-PMTP projects in ...
  • Comparison of the Performance of Fiber Reinforced Plastic Dowel Bars to EpoxyCoated and StainlessSteel Dowel Bars
    Comparison of the Performance of Fiber Reinforced Plastic Dowel Bars to Epoxy-Coated and Stainless-Steel Dowel Bars
    Ziemann, Sarah ;
    Christiansen, Annika
    2023-05-01 | PDF
    The introduction of fiber reinforced plastic (FRP) dowels as possible alternatives to the epoxy-coated and stainless-steel dowels, was contemporaneous with a paucity of knowledge of their long-term performance. Although various isolated efforts had examined them on a short-term basis and produced some qualitative results or long-term predictive mod ...
  • The Development of Knowledge in the Application of StrutandTie Methods
    The Development of Knowledge in the Application of Strut-and-Tie Methods
    Wang, Hwa-Ching ;
    Daou, Anas
    2023-05-01 | PDF
    The strut-and-tie method (STM) is a reliable and widely used approach for designing reinforced concrete members, but there are still gaps in knowledge that need to be addressed to optimize its use in common design scenarios. Addressing these gaps would lead to more efficient and cost-effective design solutions. This requires additional experimental ...
  • 07039 The Development of Knowledge in the Application of StrutandTie Method Summary
    0-7039: The Development of Knowledge in the Application of Strut-and-Tie Method [Summary]
    Dassi, Martin ;
    Bayrak, Oguzhan
    2023-05-01 | PDF
    The strut-and-tie method (STM) is a simple and widely used method for designing D-regions in reinforced concrete members. Despite its incorporation into major design codes and continuous refinement over the past century, there are still areas that require further research. These include the use of 3D strut- and-tie models for designing drill shaft ...
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