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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 4421 - 4440 of 36908 results
  • Mash 2016 Test Level 3 Evaluation of MnDOT Bicycle and Pedestrian Rail
    Mash 2016 Test Level 3 Evaluation of MnDOT Bicycle and Pedestrian Rail
    Faller, Ronald K. ;
    Rosenbaugh, Scott K.
    2020-12-11 | PDF
    The Minnesota Department of Transportation (MnDOT) desires to use a vehicle, bicycle, and pedestrian combination bridge railing system along pedestrian and bicycle bridge paths. A variation of the MnDOT combination bicycle and pedestrian railing was full-scale crash tested according to the Test Level 3 (TL-3) procedures described in the Manual for ...
  • Measures of Freight Network Resiliency During the Covid-19 Pandemic [supporting datasets]
    Hernandez, Sarah V ;
    Balthrop, Andrew
    2020-12-10 | PDF
    Recent headlines depict significant shifts in operations within the freight community in particular, e.g., HOS laws suspended at a national level for the first time in 82 years; national carriers shifting operations completely to grocery supply chains; fleet operators laying off employees in response to manufacturing closures. As a result of the cu ...
    Dataset Supporting Files
  • Application of Augmented Reality and Tangible Interfaces To Minimize Work Zone Effects on Mobility Through Participatory Planning
    Application of Augmented Reality and Tangible Interfaces To Minimize Work Zone Effects on Mobility Through Participatory Planning
    Louis, Joseph ;
    Sunderman, Adam
    2020-12-06 | PDF
    Highway work zones account for about 10 percent of congestion but are an absolute necessity in ensuring that our transportation infrastructure can meet the mobility demands of growing populations. Unlike other causes of congestion, such as crashes, weather events, and rush-hour traffic, work zones are a result of planned actions by stakeholders. Fu ...
  • Optimized Development of Urban Transportation Networks 20
    Optimized Development of Urban Transportation Networks 2.0
    Schonfeld, Paul
    ORCID ICON IMG
    2020-12-03 | PDF
    This report presents as series of eight papers on methods for planning, designing, and scheduling the implementation of improvements in urban transportation systems. Five of the papers (1 – 4 and 6) focus on methods for evaluating, sequencing and scheduling interrelated improvements in transportation networks while the others present methods for de ...
  • Design and Development of an Automated Truck Mounted Attenuator [supporting dataset]
    White, Elizabeth ;
    Mollenhauer, Michael A
    2020-12-02 | PDF
    Can an ATMA system and control concept be developed and demonstrated that makes it practical to remove the driver from the at-risk TMA vehicle in mobile and short duration work zone operations using a short following distance leader-follower control concept? Can an ATMA system be developed that allows a lead vehicle driver to perform their normal T ...
    Dataset Supporting Files
  • Incorporating Tourism Data in Traffic Estimation on Wyoming LowVolume Roads
    Incorporating Tourism Data in Traffic Estimation on Wyoming Low-Volume Roads
    Yue, Er ;
    Ksaibati, Khaled
    2020-12-01 | PDF
    This report explains the various data inputs and outputs associated with the travel demand model (TDM) developed for estimating traffic volumes on low-volume roads in Wyoming. This study incorporated tourism-related data into the TDM and developed methods to estimate traffic volume on low-volume roads in Wyoming. The new tourism-based model shared ...
  • Bridge Decks Mitigation of Cracking and Increased DurabilityPhase III
    Bridge Decks: Mitigation of Cracking and Increased Durability—Phase III
    Rahman, Mohammad ;
    Ibrahim, Ahmed
    2020-12-01 | PDF
    Early-age cracking in concrete decks significantly reduces the service life of bridges. This report discusses the application of various concrete mixtures that include potential early mitigation ingredients. Large-scale (7 ft × 10 ft) experimental bridge prototypes with similar restraint conditions found in actual bridges were poured with different ...
  • Development of a Statistical Model to Predict Materials Unit Prices for Future Maintenance and Rehabilitation in Highway Life Cycle Cost Analysis
    Development of a Statistical Model to Predict Materials' Unit Prices for Future Maintenance and Rehabilitation in Highway Life Cycle Cost Analysis
    Kim, Changmo ;
    Khan, Ghazan
    2020-12-01 | PDF
    The main objectives of this study are to investigate the trends in primary pavement materials’ unit price over time and to develop statistical models and guidelines for using predictive unit prices of pavement materials instead of uniform unit prices in life cycle cost analysis (LCCA) for future maintenance and rehabilitation (M&R) projects. Variou ...
  • Opioids at the Health and Transportation Safety Nexus
    Opioids at the Health and Transportation Safety Nexus
    Naumann, Rebecca B ;
    Shiue, Kristin
    2020-12-01 | PDF
    Background: Drug overdoses and motor vehicle (MV) crashes are leading causes of unintentional injury death in the US, resulting in over 100,000 fatalities in 2017. Research has established that opioids affect driving ability and that crash-related injuries often result in opioid prescribing. Despite known associations, current approaches for studyi ...
  • Revisiting the Impact of Teleworking on ActivityTravel Behavior Using Recent Data and SequenceBased Analytical Techniques
    Revisiting the Impact of Teleworking on Activity-Travel Behavior Using Recent Data and Sequence-Based Analytical Techniques
    Goulias, Konstadinos G. ;
    Su, Rongxiang
    2020-12-01 | PDF
    In this project motif and sequence analysis are used in tandem to analyze differences and commonalities between telecommuters and usual commuters. Telecommuters are by far more diverse in their allocation of time to places, activities, and travel. Approximately 20% of telecommuters stay at home all day during a workday, while only 8% of commuters d ...
  • Predicting SeismicInduced Rockfall Hazard for Targeted Site Mitigation
    Predicting Seismic-Induced Rockfall Hazard for Targeted Site Mitigation
    Olsen, Michael ;
    Massey, Chris
    2020-12-01 | PDF
    This research develops methods to predict seismic rockfall hazard areas by integrating two recent complementary research products (1) a lidar database of terrestrial surveys of rock slopes that span multiple earthquake events in Canterbury, NZ, and (2) a streamlined lidar-based rockfall hazard assessment method called RAI. Models were developed fro ...
  • Rapid Bridge Deck Joint Repair Investigation Phase III Tech Transfer Summary
    Rapid Bridge Deck Joint Repair Investigation – Phase III [Tech Transfer Summary]
    Jahren, Charles
    ORCID ICON IMG
    2020-12-01 | PDF
    The deck over backwall concept is a promising alternative to expansion joints that can both minimize the concrete removal needed for rehabilitation and prevent corrosives from penetrating the bridge’s substructure.
  • A Framework to Evaluate Causes and Effects of Truck Driver AtFault Crashes
    A Framework to Evaluate Causes and Effects of Truck Driver At-Fault Crashes
    Hernandez, Salvador ;
    Anderson, Jason C.
    2020-12-01 | PDF
    This study presents the analysis of truck driver-at-fault crashes, providing a framework to assess such crashes moving forward. This was accomplished through a series of analyses. First, an agency survey was administered to local, state, federal, and law enforcement agencies throughout the U.S. to gather opinions on truck driver-at-fault crashes an ...
  • Is Seal Coating Counterproductive or Not
    Is Seal Coating Counterproductive or Not?
    You, Zhanping ;
    You, Lingyun
    2020-12-01 | PDF
    While seal coating has been widely used as a cost-effective strategy in asphalt pavement preservation by MnDOT and local agencies with great success, some cities and counties in Minnesota have reported their concerns about the premature stripping of street pavements that have been seal coated. The objective of this study was to diagnosis whether se ...
  • Assessing the Health Impacts of Transportation Projects a Synthesis
    Assessing the Health Impacts of Transportation Projects - a Synthesis
    Lee, Ming S ;
    Jin, Xia
    2020-12-01 | PDF
    To identify the best approach to applying Health Impact Assessment (HIA) for complete street projects in Florida, a comprehensive literature review and case studies were conducted. Existing HIA tools applied in the U.S. and elsewhere in the world were reviewed. It was found that the Integrated Transportation and Health Impacts Model tool (ITHIM) is ...
  • Economic Impact and Contribution of Arizona Highways Magazine to State Tourism
    Economic Impact and Contribution of Arizona Highways Magazine to State Tourism
    Andereck, Kathleen ;
    Vogt, Christine
    2020-12-01 | PDF
    To determine the influence that Arizona Highways Magazine (AHM) and its branded products have on tourism and the economy in Arizona, this study examined the influence of the AHM brand—the magazine, its related retail products, television program, and Facebook page—on tourism to and within Arizona; determined trip characteristics of Arizona traveler ...
  • Demand Response Transportation Planning and Visualization Tools
    Demand Response Transportation Planning and Visualization Tools
    Monast, Kai ;
    Murphy, Narmina
    2020-12-01 | PDF
    Demand Response Transportation (DRT) provide a necessary service to their community. One of the biggest issues facing DRTs is the continued decrease in funding, from Federal to State to the Local level. To continue to meet the needs of their community, DRTs must evolve their service offerings to become more efficient to meet the financial burdens. ...
  • Development of a SelfPowered WeighinMotion System
    Development of a Self-Powered Weigh-in-Motion System
    Papagiannakis, Athanassios T. ;
    Ahmed, Sara
    2020-12-01 | PDF
    This report describes the development of a novel weigh-in-motion (WIM) system that utilizes piezoelectric elements for sensing load and powering an ultra-low power microcontroller unit (MCU) that serves as its data acquisition system. A system of 4 piezoelectric (PZT) stacks serves as the energy harvester, while load sensing is done via a set of 4 ...
  • Evaluation of SSI and WSI Variables
    Evaluation of SSI and WSI Variables
    Sturges, Leigh ;
    Fay, Laura
    2020-12-01 | PDF
    The reliability of variables used in the calculation of storm severity indices or winter severity indices (SSIs/WSIs) was evaluated via an expansive literature review, an international survey, and two rounds of interviews with data and device managers. A Recommendations Guide was created to help agencies who want to improve upon or build anew an SS ...
  • Estimating Changes in Parking Capacity and Urban Form From Vehicle Automation
    Estimating Changes in Parking Capacity and Urban Form From Vehicle Automation
    Samaras, Constantine ;
    Mersky, Avi C.
    2020-12-01 | PDF
    This project developed a method to characterize the impact of privately-owned autonomous electric vehicles on electric vehicle charger placement, distribution, utilization, and power demand. Using Seattle, WA as a case study, a least total cost optimization for charging station owner and driver costs is conducted for vehicle automation levels 0-3, ...
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