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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 5521 - 5540 of 36958 results
  • Traffic Noise Model 30 Walkthrough Getting Started
    Traffic Noise Model 3.0, Walkthrough - Getting Started
    Hastings, Aaron L.
    ORCID ICON IMG
    2019-12-31 | PDF
    The Federal Highway Administration (FHWA) with the assistance of the Volpe Center Acoustics Facility finalized the Traffic Noise Model (TNM®) version 3.0. This step-by-step guide introduces users to some of the basic concepts in highway-related noise modeling by using TNM 3.0. It provides detailed steps to create a basic project with two roadways, ...
  • Traffic Noise Model 30 Technical Manual
    Traffic Noise Model 3.0: Technical Manual
    Hastings, Aaron L.
    ORCID ICON IMG
    2019-12-31 | PDF
    This technical manual describes the Federal Highway Administration’s Traffic Noise Model (TNM®) Version 3.0. Chapter 2 describes the process of determining noise emissions and levels at a reference location 15 m (50 ft) from the traffic noise source. This includes: the geometric discretizing of the study in the horizontal plane into elemental trian ...
  • Quieter Pavement Project Death Valley National Park Interim Report for PostTreatment Conditions 1Month Age
    Quieter Pavement Project - Death Valley National Park: Interim Report for Post-Treatment Conditions, 1-Month Age
    Hastings, Aaron L. ;
    Rapoza, Amanda S.
    2019-12-31 | PDF
    The U.S. Department of Transportation, John A. Volpe National Transportation Systems Center is assisting the National Park Service, Natural Sounds and Night Skies Division in the study of practical noise reduction benefits of common surface treatments used by the Parks for pavement preservation. The goal of this study is to provide park administrat ...
  • Best Practices for Modernizing MDOT Bridge Design Manual Guides and Policy Documentation
    Best Practices for Modernizing MDOT Bridge Design Manual, Guides, and Policy Documentation
    Aktan, Haluk ;
    Attanayake, Upul
    2019-12-31 | PDF
    The Michigan Department of Transportation (MDOT) Bridge Design Manual (BDM) is a comprehensive and authoritative reference for the MDOT Design Engineers and consultants. BDM provides specifications and guidelines for the design of bridges and other major structures while the Bridge Design Guides (BDG) provide the guidance for designing and detailin ...
  • Autonomous Vehicle Adoption Assessing Operational and Environmental Impacts
    Autonomous Vehicle Adoption: Assessing Operational and Environmental Impacts
    Hicks, Andrea ;
    Ahn, Soyoung
    2019-12-31 | PDF
    Autonomous vehicles represent an evolution in transportation technology and the system of transportation itself. The vehicles will change how current transportation infrastructure is utilized, along with how people use transportation, and the environmental impacts of the transportation system. App based autonomous taxis are considered, using a stat ...
  • Understanding Freight Behavior in the Pacific Northwest An Evaluation and Application of EROAD Data to Freight Demand and Forecast Modeling
    Understanding Freight Behavior in the Pacific Northwest: An Evaluation and Application of EROAD Data to Freight Demand and Forecast Modeling
    Hernandez, Salvador
    ORCID ICON IMG
    2019-12-31 | PDF
    The overall objective of this work was to utilize a previously unused private data source to analyze freight movements in the Pacific Northwest. This objective was achieved through the use of private data acquired as part of an ongoing study with EROAD. EROAD is a company that develops and implements technology to modernize traditional paper-based ...
  • Standard Design for Nebraska County Bridges
    Standard Design for Nebraska County Bridges
    Sim, Chungwook  ;
    Hu, Jiong
    2019-12-31 | PDF
    Many county-owned bridges in Nebraska need replacement due to their structural deficiency. Most of the bridges needing replacement are in the 40 to 60 ft range. This span range lacks a standard design that fits Nebraska county practices in terms of speed and simplicity of construction. The current systems being used are (a) Precast 1 by 2 ft planks ...
  • Utilizing Digital Exhaust from Smartphone Applications for Transportation Planning Continuous Measurement and Market Analysis
    Utilizing Digital Exhaust from Smartphone Applications for Transportation Planning, Continuous Measurement, and Market Analysis
    Peters, Jonathan ;
    Brakewood, Candace
    2019-12-30 | PDF
    The goal of this project was to take a critical look at how new technologies used by transit riders can transform transportation, particularly to assess what riders do after they obtain travel information. The smartphone application, Transit App, which provides real-time transit and shared mobility information, was used in this research. The Transi ...
  • Establishment of Wildflower Islands to Enhance Roadside Health and Aesthetics
    Establishment of Wildflower Islands to Enhance Roadside Health and Aesthetics
    Wu-Smart, Judy ;
    Schacht, Walter
    2019-12-30 | PDF
    Wildflowers are crucial in the ecological function of the low-input roadside plant communities in terms of water and nutrient cycling, nutrient inputs such as nitrogen, total plant canopy cover, stand longevity, and provision of habitat for numerous small animals. Further, wildflowers provide critical foraging and nesting resources for birds, insec ...
  • Precast Concrete DecktoGirder Connection Using UHPC
    Precast Concrete Deck-to-Girder Connection Using UHPC
    El-Khier, Mostafa Abo ;
    Morcous, George
    2019-12-30 | PDF
    Recently, the implementation of ultra-high performance concrete (UHPC) in bridge connections is growing rapidly as an innovative method of accelerated bridge construction. This report presents a new precast concrete deck-to-concrete girder connection that eliminates any changes to girder design/production and any possible conflict between deck and ...
  • Remediating Soil for Successful Vegetation Establishment Along Nebraska Highways
    Remediating Soil for Successful Vegetation Establishment Along Nebraska Highways
    Mills, Shad ;
    Mamo, Martha
    2019-12-30 | PDF
    Vegetation along roadsides is important to prevent soil erosion, provide habitat, and filter water running off the road. Vegetation close to the pavement along highways in Nebraska does not readily establish and persist. It is thought that the sodium and bulk density are the driving factors behind the lack of vegetation. After a construction projec ...
  • Implementation of Intelligent Compaction IC for Pavement Construction in Vermont
    Implementation of Intelligent Compaction (IC) for Pavement Construction in Vermont
    Foroutan, Maziar ;
    Ghazanfari, Ehsan
    2019-12-27 | PDF
    Compaction is one of the most important operations in pavement construction. Poor compaction of different pavement layers (i.e. subgrade, sub-base, base, and wearing course) can lead to various types of deterioration/failure, which consequently increases the cost of maintenance and rehabilitation. Therefore, it is crucial to control the compaction ...
  • Exploring the Role of Attitude in the Acceptance of Self-Driving Shuttles Dataset
    Xing, Yan ;
    Handy, Susan L
    2019-12-23 | PDF
    Self-driving vehicles, as a revolution in mobility, are emerging and developing rapidly. However, public attitudes toward this new unproven technology are still uncertain. Given the significant influence of attitude toward a new technology on the intention to use it, the question arises as to why some people are in favor of this technology whereas ...
    Dataset Supporting Files
  • Bicycling Comfort Video Experiment Dataset
    Fitch, Dillon T. ;
    Carlen, Jane
    2019-12-21 | PDF
    This tabular data can be used to evaluate perceived bicycling comfort on distinct state highways in California. The highway settings are primarily urban, but vary in traffic conditions, lane configurations, speeds, and bicycling infrastructure. The data include survey responses to video clips of these state highways along with a series of additiona ...
    Dataset Supporting Files
  • Managing Energy and Emissions for Rail Operations
    Managing Energy and Emissions for Rail Operations
    Frey, H Christopher ;
    Rastogi, Nikhil
    2019-12-20 | PDF
    The objectives of this work include: (1) benchmark baseline locomotive fuel use and emission rates (FUER) to EPA dynamometer measurements, other locomotives, and emission standards; (2) quantify the effect of transients on real-world trip fuel use and emissions (TFUE); (3) quantify the trade-offs in TFUE between double- and single-powered push/pull ...
  • Commuter Mobility versus Work-zone Safety: An Empirical Study using Data Mining of Anonymous User Generated Trip Information [supporting dataset]
    Louis, Joseph
    ORCID ICON IMG
    2019-12-18 | PDF
    This dataset contains the following data that was collected to study the relationship between commuter’s mobility and safety as they drive through highway work-zones; as well as the construction worker’s perception of safety: 1. SurveyForWorkers.docx: This file contains the survey that was used to collect worker perceptions of safety in work-zones. ...
    Dataset Supporting Files
  • Measuring the Impact of a Landslide on Transportation Infrastructure to Improve Mobility and Safety [supporting dataset]
    Darrow, Margaret M.
    2019-12-18 | PDF
    This Excel file contains air temperature, near-surface temperature, subsurface temperatures, and water pressure measured between the toe of FDL-A and the old Dalton Highway embankment. It was collected to establish baseline conditions before FDL-A impacts the embankment. Metadata are included within the Excel spreadsheet. Data was collected hourly, ...
    Dataset Supporting Files
  • Evaluation of Ground Penetrating Radar as a Tool in Designing Maintenance and Rehabilitation Projects in Mississippi
    Evaluation of Ground Penetrating Radar as a Tool in Designing Maintenance and Rehabilitation Projects in Mississippi
    Cooley Jr, L Allen ;
    Varner, Robert L.
    2019-12-18 | PDF
    This research project was conducted to evaluate the ground penetrating radar (GPR) for use as a tool to assist an Engineer in designing maintenance and rehabilitation solutions. GPR testing was conducted on 64 different pavement sections located around the state of Mississippi. GPR traces from 16 of these sections were evaluated in order to compare ...
  • Deaf and Hardof Hearing Drivers Making the Highways Safer for Everyone
    Deaf and Hard-of -Hearing Drivers: Making the Highways Safer for Everyone
    Gordon, Martin E
    2019-12-16 | PDF
    One of the primary goals of USDOT is to make the U.S. transportation system the safest In the world. In order to fulfill this goal, it is important to understand how to improve highway safety for all users – including those users that may have different sensory inputs than the general population. In fact, some highway users belong to groups with sp ...
  • Development of Protocol to Maintain Winter Mobility of Different Classes of Pervious Concrete Pavement Based on Porosity
    Development of Protocol to Maintain Winter Mobility of Different Classes of Pervious Concrete Pavement Based on Porosity
    Nassiri, Somayeh ;
    AlShareedah, Othman
    2019-12-15 | PDF
    The main focus of this study was to develop an image-based method to characterize the porosity of in-situ pervious concrete (PC), so this feature can be correlated with ice formation and winter maintenance operations of the pavement. First, a surface imaging-based porosity characterization method was investigated. A total of 27 PC slabs cast at thr ...
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