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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 5061 - 5080 of 36908 results
  • Development of MASH TL3 Transitions for Cast in Place Concrete Barriers
    Development of MASH TL-3 Transitions for Cast in Place Concrete Barriers
    Sheikh, Nauman M. ;
    Moran, Sana M
    2020-06-01 | PDF
    The objective of this project was to develop transition designs for three cast in place concrete barrier combinations. These included transitions for connecting (a) TxDOT’s 36-inch tall Single Slope Traffic Rail (SSTR) to 42-inch tall Single Slope Concrete Barrier (SSCB), (b) 32-inch tall F-shape concrete barrier to SSCB, and (c)TxDOT’s 32-inch tal ...
  • Bridge Structural Analyses for Staged Construction and Constructability Reviews
    Bridge Structural Analyses for Staged Construction and Constructability Reviews
    Aktan, Haluk M ;
    Attanayake, Upul
    2020-05-31 | PDF
    Constructability requirements need to be addressed during the design of highway bridges. However, the typical design practice is to consider the limit state stresses in structural elements of a bridge that is completed as per the project specifications. This process leaves the responsibility of analysis and design for construction stages to a contr ...
  • Greensburg Vehicle and Pedestrian Study South Main Street between West Otterman and Pittsburgh Street
    Greensburg Vehicle and Pedestrian Study: South Main Street between West Otterman and Pittsburgh Street
    Holland, Kevin ;
    Pires, Bernardo R.
    2020-05-21 | PDF
    The Intelligent Mobility Meter (IMM) is a portable data acquisition and analysis platform for the collection of fine-grained statistics on pedestrian, cyclist and vehicular traffic. This study used the IMM to provide real-world, valuable, traffic data and actionable information to local government entities. This study focuses on the deployment of t ...
  • Planning for the Inevitable Readying DOTs for Disaster Debris Management
    Planning for the Inevitable: Readying DOTs for Disaster Debris Management
    McNeil, Sue ;
    Woody, Michelle
    2020-05-19 | PDF
    Hurricanes, tornadoes, floods, and other natural disasters result in significant debris, which impedes mobility and presents a challenge to state and local transportation agencies for the removal of debris and inspecting and repairing roads and bridges that are damaged. Debris management involves understanding regulations versus guidance, reimburse ...
  • SPARKMAN: A Smart Parking Management Tool for University Campuses [supporting dataset]
    Cheu, Ruey Long ;
    Gurbuz, Okan
    2020-05-17 | PDF
    PI Kelvin Cheu and his students have developed a total parking demand model for students and a “base price” model for student parking permits based on data gathered from an internet survey on parking at 208 university campuses across the United States. This project aims to develop a student parking lot zoning and zone permit pricing model, and then ...
    Dataset Supporting Files
  • A MultiModel Approach Toward Understanding Iron Fouling at RockFill Drainage Sites Along Roadways in New Hampshire USA
    A Multi-Model Approach Toward Understanding Iron Fouling at Rock-Fill Drainage Sites Along Roadways in New Hampshire, USA
    Lombard, Melissa A ;
    Lombard, Pamela J.
    2020-05-14 | PDF
    Factors affecting iron fouling in wet areas adjacent to roadways were investigated by collecting field rock cut and aqueous physicochemical data; developing exploratory predictive models; and developing geochemical models. Basic data included the identification of iron fouling from aerial imagery and field visits at 374 New Hampshire rock cut locat ...
  • State of Practice and Literature Review on Foundations for Coastal Traffic Signal Mast Arm Structures
    State of Practice and Literature Review on Foundations for Coastal Traffic Signal Mast Arm Structures
    Rodriguez, Carlos M ;
    Pando, Miguel A.
    2020-05-14 | PDF
    This report presents a state of practice and literature review study conducted as part of NCDOT Research Project RP 2018-17 on foundations for coastal mast arm traffic signal structures. The original scope of this project involved experimental and computation research on alternative foundation systems for support of coastal mast arm traffic signal ...
  • Funding Strategies for Transit Agencies in South Dakota
    Funding Strategies for Transit Agencies in South Dakota
    Donahue, Corinne ;
    Worker-Braddock, Tom
    2020-05-13 | PDF
    This study focused on funding strategies for transit agencies in South Dakota, with two primary focuses – 1) identifying traditional and non-traditional funding sources and 2) developing a fare strategy framework for transit agencies – no matter the size or location of the agency.
  • Final Report Clear Recovery Zone Vegetation Requirements and Review of Current Tree Pruning and Maintenance Practices for Landscape Urban and Rural Areas within the Right of Way
    Final Report: Clear Recovery Zone Vegetation Requirements, and Review of Current Tree Pruning and Maintenance Practices for Landscape, Urban, and Rural Areas within the Right of Way
    Koeser, Andrew ;
    Blair, Seth
    2020-05-13 | PDF
    Though not its primary mission, the Florida Department of Transportation (FDOT) is one of the most significant tree planting organizations in the state. This research investigates the effectiveness of their existing contracts and tree planting management efforts. In an assessment of 2711 planted trees and palms, the authors found that 98.5% survive ...
  • Do Special Bike Programs Promote Public Health A case study of New York Citys Citi Bike bike sharing program Or Investigating the Health Effect of the Citi Bike Bikesharing Program in New York City Using the ITHIM Health Assessment Tool
    Do Special Bike Programs Promote Public Health? A case study of New York City’s Citi Bike bike sharing program Or Investigating the Health Effect of the Citi Bike Bike-sharing Program in New York City Using the ITHIM Health Assessment Tool
    Hou, Zenghao ;
    Wu, Kanglong
    2020-05-11 | PDF
    Bike travel is often considered as a healthy and environmentally friendly mode of travel and promoted by cities. Bike sharing, as a bike usage boosting program, invigorates these advantages. However, as usage of it rises, so do the adverse effects on cyclists’ physical well-being, such as hazardous air exposure and bicycle involved accidents. The n ...
  • Highway Rock Cut Inventory and Failure Potential Allegany County Maryland
    Highway Rock Cut Inventory and Failure Potential, Allegany County, Maryland
    Brezinski, David K. ;
    Adams, Rebecca Kavage
    2020-05-11 | PDF
    One hundred ninety-five, MDOT SHA-maintained, roadway embankments in Allegany County, Maryland, were cataloged as to the effects of climate, vegetation, and geology factors on slope stability. Observations included dimensions, weathering condition, and geologic structure. Recorded data was employed to evaluated the potential for slope failure such ...
  • Development of a PosttoDeck Connection for a TL4 SteelTube Bridge Rail
    Development of a Post-to-Deck Connection for a TL-4 Steel-Tube Bridge Rail
    Mauricio, Pascual ;
    Rasmussen, Jennifer D.
    2020-05-07 | PDF
    A new post-to-deck connection was designed for mounting an upcoming Manual for Assessing Safety Hardware, Second Edition (MASH 2016) Test Level 4 (TL-4) steel-tube bridge rail to the side of the bridge deck to limit the impact load transferred to the deck and to minimize the propensity for deck damage during impacts. With preference for the bridge ...
  • Dynamic Management of Food Redistribution for 412 Food Rescue [supporting datasets]
    Rubinstein, Zachary B.
    ORCID ICON IMG
    2020-05-06 | PDF
    These CSV files provide a base dataset for testing the FoodGo system that schedules the pick-ups and drop-offs of food donations from donors to nonprofits. The first file, foodgo-order.csv, specifies 500 orders. Each row in the file contains an order id, the quantity of the order in a standard unit, whether or not the order is perishable, and the l ...
    Dataset Supporting Files
  • Guidelines for Implementation of Right Turn Flashing Yellow Arrows and Leading Pedestrian Intervals
    Guidelines for Implementation of Right Turn Flashing Yellow Arrows and Leading Pedestrian Intervals
    Cunningham, Chris ;
    Pyo, Kihyun
    2020-05-05 | PDF
    North Carolina has been a leader in implementation of flashing yellow arrows (FYA) for left turning permissive movements. The public acceptance of such devices has resulted in the implementation of FYA for right turns at intersections with high pedestrian volumes. In addition to this, there are existing sites where Leading Pedestrian Intervals (LPI ...
  • If You Provide Will They Ride Motivators and Deterrents to Shared MicroMobility
    If You Provide, Will They Ride? Motivators and Deterrents to Shared Micro-Mobility
    Pimentel, Ronald W ;
    Lowry, Michael B.
    2020-05-05 | PDF
    Bike share, e-bike share, and e-scooter systems (shared micro-mobility) are gaining popularity throughout the United States and internationally, but the optimal system design has not been determined. This study investigated motivators for and deterrents to the use of such systems in the Pacific Northwest by using a research framework from consumer ...
  • Radio Frequency Identification RFID Technology for Transportation Signage Management
    Radio Frequency Identification (RFID) Technology for Transportation Signage Management
    Xia, Tian ;
    Lee, Byung
    2020-05-04 | PDF
    Transportation asset management is a strategic and systematic process of operating, maintaining, upgrading, and expanding physical assets effectively throughout their lifecycle. It focuses on business and engineering practices for resource allocation and utilization, with the objective of better decision making based upon quality information and we ...
  • Midblock Crash Analysis Using Precisely Geocoded Crashes
    Midblock Crash Analysis Using Precisely Geocoded Crashes
    Sarasua, Wayne A. ;
    Ogle, Jennifer H
    2020-05-01 | PDF
    Recent research has shown that the new South Carolina Collision and Ticket Tracking System (SCCATTS) has resulted in dramatically improved geocoded crash positioning that can facilitate statewide safety screening, robust analysis procedures, and formulation of targeted countermeasure programs. The literature has indicated that recommended segment l ...
  • Analysis of Driven Pile Capacity within Prebored Soil
    Analysis of Driven Pile Capacity within Pre-bored Soil
    Chen, Shengli ;
    Li, Lin
    2020-05-01 | PDF
    In Louisiana and many other states in the U.S., pre-boring procedures are routine practice for large displacement piles driven through hard/stiff cohesive soils. At present, the analysis and design of pre-bored piles rely primarily on local experiences, since the effects of pre-boring on the driving force as well as on the setup and long-term shaft ...
  • The Influence of Unmanned Aerial Systems on Driving Performance [supporting dataset]
    Fitzpatrick, Cole ;
    Knodler, Michael A.
    2020-05-01 | PDF
    Unmanned aerial systems (UAS), or drones, have become increasingly utilized for a myriad of applications in the vicinity of the roadway and can offer a low-cost alternative to many labor-intensive data collection techniques, including infrastructure inspection, roadway marking data collection, and more. To collect much of this data with a desired d ...
    Dataset Supporting Files
  • Revisiting TODs How Subsequent Development Affects the Travel Behavior of Residents in Existing TransitOriented Developments
    Revisiting TODs: How Subsequent Development Affects the Travel Behavior of Residents in Existing Transit-Oriented Developments
    McNeil, Nathan ;
    Dill, Jennifer
    2020-05-01 | PDF
    Portland State University has worked with the Portland Metro regional government periodically since 2005 to survey occupants of buildings for which developers had received funding from Metro’s Transit-Oriented Development (TOD) Program. This research extends upon the prior TOD surveys in Portland by revisiting a set of developments with a second wa ...
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