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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 4861 - 4880 of 36958 results
  • Buffalo Main Street Smart Corridor Plan
    Buffalo Main Street: Smart Corridor Plan
    Hamann-Burney, Jamie ;
    Frank, Frederick A.
    2020-08-01 | PDF
    Smart City technological applications have been employed in several cities worldwide to help improve functionality of transportation infrastructure. The information collected through the distribution of sensors inform applications that optimize city life. The Steering Committee for this project, led by the Buffalo Niagara Medical Campus (BNMC), env ...
  • Using Microtransit Electric Low Speed Vehicles as a Means for Improving Quality of Life in MiamiDade County
    Using Microtransit Electric Low Speed Vehicles as a Means for Improving Quality of Life in Miami-Dade County
    Cevallos, Fabian
    2020-08-01 | PDF
    The services provided by public transportation systems increase the mobility and accessibility options of a community. In addition, transit improvements are one of the transportation demand strategies for enhancing community livability, as they offer affordable transportation alternatives and help reduce traffic congestion. They can provide access ...
  • Investigating Autonomous Vehicle Impacts on Individual ActivityTravel Behavior
    Investigating Autonomous Vehicle Impacts on Individual Activity-Travel Behavior
    Dannemiller, Katherine A. ;
    Mondal, Aupal
    2020-08-01 | PDF
    This paper develops an analytic system to investigate the effects of AV availability on multiple dimensions of activity-travel behavior at once, based on a direct survey-based modeling approach. The model uses individual socio-demographics, built environment variables, as well as psycho-social variables (in the form of latent psychological construc ...
  • Optimal Placement of ReservationBased Intersections in Urban Networks
    Optimal Placement of Reservation-Based Intersections in Urban Networks
    Patel, Rahul ;
    Venkatraman, Prashanth
    2020-08-01 | PDF
    Reservation-based traffic control is a revolutionary intersection management system which involves the communication of autonomous vehicles and an intersection to request space-time trajectories through the intersection. Although previous studies have found congestion and throughput benefits of reservation-based control that surpass signalized cont ...
  • Detection and Estimation of Inundation and Associated Risks Using Traffic Monitoring Cameras and Image Processing Under Extreme Flooding Conditions
    Detection and Estimation of Inundation and Associated Risks Using Traffic Monitoring Cameras and Image Processing Under Extreme Flooding Conditions
    Ham, Suyun ;
    Noh, Seongjin
    2020-08-01 | PDF
    The main objective of this project is to develop an inundation detection and evaluation framework using images from traffic monitoring cameras and reliable flood monitoring under extreme precipitation conditions. This study presents a comparative assessment of image enhancement and segmentation techniques to automatically identify the flash floodin ...
  • Severe Weather Index
    Severe Weather Index
    Fay, Laura ;
    Villwock-Witte, Natalie
    2020-08-01 | PDF
    A severe weather index (SWI) was developed and tested using RWIS data from 2012 to 2020. The developed SWI model has an overall adjusted R2 = 0.67. The severity bounds are defined as low (0 to 1.2), moderate (1.2 to 8), and severe (greater than 8). The SWI model was tested quantitively and qualitatively using 2019-2020 winter weather data and input ...
  • Evaluation Comparison and Correlation Between the Idaho IT144 and AASHTO T84 Methods for Determining the Specific Gravity and Absorption Properties of Fine Aggregate
    Evaluation, Comparison, and Correlation Between the Idaho IT-144 and AASHTO T-84 Methods for Determining the Specific Gravity and Absorption Properties of Fine Aggregate
    Sharma, Sunil ;
    Kassem, Emad
    2020-08-01 | PDF
    The objective of this study was to develop a correlation between lab tests performed using the CoreLok (Idaho -IT-144) method and results from the AASHTO T-84 procedure for fine aggregates in Idaho. These tests are used to determine critical aggregate parameters such as (a) absorption, (b) Gsa, (c) Gsb, and (d) GsbSSD. The AASHTO T-84 procedure tak ...
  • Effects of Incorporating Connected Vehicle Technologies Into NoNotice Emergency Evacuation During Winter Weather Phase I
    Effects of Incorporating Connected Vehicle Technologies Into No-Notice Emergency Evacuation During Winter Weather (Phase I)
    Chen, Chuang ;
    Shi, Xianming
    2020-08-01 | PDF
    The goal of this Center for Advanced Multimodal Mobility Solutions and Education (CAMMSE) project was to preliminarily model the microscopic and macroscopic effects of incorporating connected vehicle (CV) technologies into emergency evacuation during typical winter weather in the Pacific Northwest. To meet this goal, the following objectives will b ...
  • Development of Innovative Effective Training Modules and Methods for Pavement Designers for Rapid Deployment and Continuous Operation of MDPDG
    Development of Innovative & Effective Training Modules and Methods for Pavement Designers for Rapid Deployment and Continuous Operation of MDPDG
    Kim, S. Sonny ;
    Worthey, Hampton
    2020-08-01 | PDF
    The American Association of State Highway and Transportation Officials (AASHTO) Joint Task Force on Pavements – in cooperation with the National Cooperative Highway Research Program (NCHRP) and the Federal Highway Association (FHWA) – sponsored the development of an AASHTO Mechanistic-Empirical (ME) pavement design procedure. NCHRP project 1-37A pr ...
  • RealTime Work Zone Traffic Management via Unmanned Air Vehicles
    Real-Time Work Zone Traffic Management via Unmanned Air Vehicles
    Ham, Suyun ;
    Noh, Seongjin
    2020-08-01 | PDF
    Flooding poses safety hazards to motorists, emergency and maintenance crews and may cause costly damage to transportation infrastructure and its operation. Flash flooding, in particular, causes the most flood-related deaths According to the National Oceanic Atmospheric Administration (NOAA), in 2017 alone, flash flooding also caused $60.7 billion w ...
  • ABQ Streets Project Creating Alternative Residential Street Designs
    ABQ Streets Project: Creating Alternative Residential Street Designs
    Rowangould, Gregory ;
    Ferenchak, Nick
    2020-08-01 | PDF
    This research evaluates opportunities for retrofitting residential streets with alternative designs with the overall goal of improving their function, reducing their negative impacts and reducing maintenance costs. This is accomplished through three main research tasks. First, the authors conduct a comprehensive review of the street design literatu ...
  • MechanicOperator Training and Training Needs for Winter Maintenance Equipment Synthesis Report
    Mechanic/Operator Training and Training Needs for Winter Maintenance Equipment: Synthesis Report
    CTC & Associates LLC
    2020-08-01 | PDF
    Snowplow trucks operate in extreme conditions that take a toll on engines, wiring, controls, sensors, connectors, augers, conveyors, spinners and other parts exposed to extreme cold, wetness and corrosive materials. Consequently, winter road maintenance equipment may break down on the road. Road maintenance agencies have a range of protocols for de ...
  • Utilizing Archived Traffic Signal Performance Measures for Pedestrian Planning and Analysis
    Utilizing Archived Traffic Signal Performance Measures for Pedestrian Planning and Analysis
    Singleton, Patrick A. ;
    Runa, Ferdousy
    2020-08-01 | PDF
    The overall goal of this project was to explore the use of continuous pedestrian traffic signal data from the Automated Traffic Signal Performance Measures (ATSPM) system to estimate pedestrian volumes at signalized intersections. Our objectives were to identify patterns of pedestrian activity at signalized intersections, develop methods to estimat ...
  • Developing a Quality of Signal Timing Performance Measure Methodology for Arterial Operations
    Developing a Quality of Signal Timing Performance Measure Methodology for Arterial Operations
    Tian, Zong ;
    Wang, Aobo
    2020-08-01 | PDF
    The report covers the work performed under NDOT’s research contract #607-17-803, which involved the development of a quality of signal timing performance measure methodology for arterial operations. Evaluating the benefits of traffic signal re-timing is of an increasing interest to transportation policymakers, operators, and the public, as integrat ...
  • Understanding the Surprising and Oversized Use of Ridesourcing Services in Poor Neighborhoods in NYC
    Understanding the Surprising and Oversized Use of Ridesourcing Services in Poor Neighborhoods in NYC
    Garrick, Norman ;
    Atkinson-Palombo, Carol
    2020-08-01 | PDF
    For-hire vehicle trips in the five boroughs of New York City from 2014 to 2017 increased by 82 million annually (46%). This report uses factor analysis and cluster analysis to create a typology that is then used to quantify how usage patterns have evolved in different types of neighborhood. Having surged 40-fold, ridesourcing trips originating in t ...
  • Development of Pavement Temperature Prediction Model
    Development of Pavement Temperature Prediction Model
    Kassem, Emad ;
    Bayomy, Fouad M. S.
    2020-08-01 | PDF
    Pavement temperature has a significant effect on the deflection measured using the falling weight deflectometer (FWD) or traffic speed deflectometer (TSD). Pavement temperature is used to adjust the backcalculated asphalt concrete moduli or deflection at a reference temperature. The current practice is to drill holes at the mid-depth of the top asp ...
  • RealTime Early Detection and Monitoring of Flooding Using LowCost Highly Sensitivity Ultrasound Sensing of Water Level
    Real-Time Early Detection and Monitoring of Flooding Using Low-Cost Highly Sensitivity Ultrasound Sensing of Water Level
    Ham, Suyun ;
    Noh, Seongjin
    2020-08-01 | PDF
    Flooding poses safety hazards to motorists, emergency and maintenance crews and may cause costly damage to transportation infrastructure and its operation. Flash flooding, in particular, causes the most flood-related deaths According to the National Oceanic Atmospheric Administration (NOAA), in 2017 alone, flash flooding also caused $60.7 billion w ...
  • DeepLearning Based Trajectory Forecast for Safety of Intersections with Multimodal Traffic Phase II
    Deep-Learning Based Trajectory Forecast for Safety of Intersections with Multimodal Traffic (Phase II)
    Mohamed, Abduallah ;
    Qian, Kun
    2020-08-01 | PDF
    Predicting pedestrian trajectories is of major importance for several applications including autonomous driving and surveillance systems. In autonomous driving, an accurate prediction of pedestrians trajectories enables the controller to plan ahead the motion of the vehicle in an adversarial environment. For example, it is a critical component for ...
  • Development Education and Implementation of a LowCost Audio Sensorbased Autonomous Surveillance System for Smart and Connected Transportation Infrastructure Construction and Maintenance
    Development, Education, and Implementation of a Low-Cost Audio Sensor-based Autonomous Surveillance System for Smart and Connected Transportation Infrastructure Construction and Maintenance
    Lee, Yong-Cheol ;
    Choi, Jin-Woo
    2020-08-01 | PDF
    Each Department of Transportation (DOT) in the United States has to govern and oversee an enormous number of transportation construction and maintenance projects. However, since a transportation construction project entails several miles of a job site including numerous work tasks and equipment operations, it has been increasingly challenging for e ...
  • Comparison of SHRP 2 Naturalistic Driving Data to Geometric Design Speed Characteristics on Freeway Ramps
    Comparison of SHRP 2 Naturalistic Driving Data to Geometric Design Speed Characteristics on Freeway Ramps
    Brewer, Marcus A. ;
    Stibbe, Jayson
    2020-08-01 | PDF
    Shared autonomous vehicle (SAV) systems, in which autonomous vehicles (AVs) are owned by transportation network companies that offer Mobility as a Service (MaaS) to customers, are gaining considerable research attention. SAVs have the potential to reduce vehicle ownership and parking requirements, improve traffic conditions, and minimize empty-vehi ...
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