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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 4641 - 4660 of 36020 results
  • 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 | ZIP
    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 ...
  • Assessing Alternative Approaches for Conveying Automated Vehicle ‘Intentions' [supporting datasets]
    Virginia Tech Transportation Institute  ...
    2020-05-01 | ZIP
    One of the biggest highly automated vehicle (HAV) market barriers may be a lack of user trust in the automated driving system itself. Research has shown that this lack of faith in the system primarily stems from a lack of system transparency while the vehicle is in motion—users are not informed how the car will react in an upcoming scenario—and not ...
    Dataset Supporting Files
  • PhysicsBased Sensor Models for Virtual Simulation of Connected and Autonomous Vehicles
    Physics-Based Sensor Models for Virtual Simulation of Connected and Autonomous Vehicles
    Negrut, Dan ;
    Serban, Radu
    2020-05-01 | PDF
    This document contains the final project report for the SAFER-SIM project titled “Physics-Based Sensor Models for Virtual Simulation of Connected and Autonomous Vehicles.” The report includes discussion of sensors models for simulation autonomous vehicles, and overviews the simulation framework developed in accordance with the project. The framewor ...
  • Best Practices For Installation Of Rectangular Rapid Flashing Beacons With And Without Median Refuge Islands
    Best Practices For Installation Of Rectangular Rapid Flashing Beacons With And Without Median Refuge Islands
    Monsere, Christopher M. ;
    Kothuri, Sirisha
    2020-05-01 | PDF
    Over the last decade, Oregon jurisdictions have systematically installed pedestrian crossing enhancements (PCEs) at crosswalks including rectangular rapid flashing beacons (RRFBs), which have been widely used in many jurisdictions, typically at mid-block locations. However, the design details vary widely. The objectives of this research are to deve ...
  • Evaluating the Traffic and Emissions Impacts of New York City Cordon Pricing
    Evaluating the Traffic and Emissions Impacts of New York City Cordon Pricing
    Baghestani, Amirhossein ;
    Tayarani, Mohammad
    2020-05-01 | PDF
    Traffic congestion is a major challenge in metropolitan areas due to economic and negative health impacts. Several strategies have been tested all around the globe to relieve traffic congestion and minimize transportation externalities. Congestion pricing is among the most cited strategies with the potential to manage the travel demand. This study ...
  • The Impact of Driver’s Mental Models of Advanced Vehicle Technologies on Safety and Performance [supporting datasets]
    Gaspar, John G ;
    Carney, Cher
    2020-05-01 | CSV
    Advanced driver assistance systems (ADAS) are rapidly being introduced across automobile manufacturer lineups. These technologies have the potential to improve safety, but they also change the driver-vehicle relationship—as well as their respective roles and responsibilities. To maximize safety, it is important to understand how drivers’ knowledge ...
    Dataset Supporting Files
  • ConstructionReady Digital Terrain Models
    Construction-Ready Digital Terrain Models
    Catchings, Rachel ;
    Waddle, Steven
    2020-05-01 | PDF
    Since 2009, Kentucky has made its 3D design data available as a supplemental reference to bidders through the project delivery process. This research discusses methods for ensuring electronic engineering data (EED) — and specifically the proposed digital terrain model (DTM) — support modern construction management methods at the Kentucky Transporta ...
  • Multiagent Simulationbased Virtual Test Bed Ecosystem MATSim NYC
    Multi-agent Simulation-based Virtual Test Bed Ecosystem: MATSim- NYC
    Chow, Joseph Y J ;
    Ozbay, Kaan
    2020-05-01 | PDF
    One of the missions of C2SMART is to help cities around the country better understand the transferability of transportation technologies. For this purpose, two yearlong projects were initiated from 2018 – 2020 to initiate a new virtual test bed ecosystem: (1) 2018 – 2019: Phase I: Open Source Multi-Agent Virtual Simulation Testbed and (2) 2019 – 20 ...
  • The Impact of Drivers Mental Models of Advanced Vehicle Technologies on Safety and Performance
    The Impact of Driver’s Mental Models of Advanced Vehicle Technologies on Safety and Performance
    Gaspar, John G ;
    Carney, Cher
    2020-05-01 | PDF
    Advanced driver assistance systems (ADAS) are rapidly being introduced across automobile manufacturer lineups. These technologies have the potential to improve safety, but they also change the driver-vehicle relationship—as well as their respective roles and responsibilities. To maximize safety, it is important to understand how drivers’ knowledge ...
  • Horizontal Curve Evaluation Handbook
    Horizontal Curve Evaluation Handbook
    Pratt, Michael P. ;
    Geedipally, Srinivas R.
    2020-05-01 | PDF
    Horizontal curves are a common and essential element of the rural highway system, and it is essential to sign and mark them consistently to minimize curve crash risk. Curve signing and marking consists primarily of conducting an engineering study to set the curve advisory speed, posting the advisory speed if necessary, and providing other signs and ...
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