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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 2641 - 2660 of 36873 results
  • Estimating HCM Default Parameters for Louisiana Research Project Capsule 233SS
    Estimating HCM Default Parameters for Louisiana: Research Project Capsule [23-3SS]
    Rahman, Ashifur ;
    Rupnow, Tyson
    2023-01-01 | PDF
    The primary objective of this research is to develop intersection capacity parameters that are specific to Louisiana conditions. More specifically, the research aims to estimate the saturation flow rate for selected signalized intersections and analyze critical headway and follow-up headway at stop-controlled intersections.
  • Graduated Driver Licensing Program
    Graduated Driver Licensing Program
    Koo, Jeeyen ;
    Martin, Andrew
    2023-01-01 | PDF
    To address challenges related to teen driver safety, Kentucky adopted a simple graduated driver licensing (GDL) program in 1996 and further expanded it in 2006 by adding an intermediate licensing phase, requirements for supervised practice driving, and instituting restrictions on passenger age. Despite GDL programs having been adopted throughout th ...
  • RealTime Truck Parking Information Integration Visualization and Prediction
    Real-Time Truck Parking Information Integration, Visualization, and Prediction
    Wang, Yanhai ;
    Yang, Hao
    2023-01-01 | PDF
    The trucking industry plays a critical role in freight transportation in the United States. One major problem commonly recognized across the country is inadequate truck parking supply because existing truck parking facilities are struggling to meet the demand of increasing numbers of trucks on the road. Lack of parking spaces and real-time parking ...
  • An Evaluation of GPR Monitoring Methods on Varying River Ice Conditions A Case Study in Alaska
    An Evaluation of GPR Monitoring Methods on Varying River Ice Conditions: A Case Study in Alaska
    Richards, Elizabeth ;
    Stuefer, Svetlana
    2023-01-01 | PDF
    Ice roads and bridges across rivers, estuaries, and lakes are common transportation routes during winter in regions of the circumpolar north. Ice thickness, hydraulic hazards, climate variability and associated warmer air temperatures have always raised safety concerns and uncertainty among those who travel floating ice road routes. One way to addr ...
  • Evaluation of Left Shoulder as Parttime Travel Lane Design Alternatives and Transportation Management Center Staff Training Module Development
    Evaluation of Left Shoulder as Part-time Travel Lane Design Alternatives and Transportation Management Center Staff Training Module Development
    Deng, Zhuohang ;
    Luo, Zhiliang
    2023-01-01 | PDF
    Permanent capacity expansion, such as adding new lanes, is no longer a viable strategy to address traffic congestion in California; hence, ITS (Intelligent Transportation System) strategies, such as part-time use of the shoulder as a travel lane, need to be explored. The use of the shoulder as a travel lane during peak traffic hours has limited app ...
  • Use of Concrete Grinding Residue as a Soil Amendment
    Use of Concrete Grinding Residue as a Soil Amendment
    Bollinger, Patrick E B ;
    Jibon, Md
    2023-01-01 | PDF
    Concrete diamond grinding on pavement projects generates a nonhazardous waste byproduct called concrete grinding residue (CGR). CGR has known cementitious characteristics that suggest a latent use as a soil-stabilizing amendment, especially for poor and problematic soils. In this study, Western Iowa loess soil was amended with CGR and subjected to ...
  • Modeling MultiModal Network Equilibrium with Active Transportation and Shared Mobility
    Modeling Multi-Modal Network Equilibrium with Active Transportation and Shared Mobility
    Hou, Zenghao
    ORCID ICON IMG
    2023-01-01 | PDF
    The imbalance between increasing travel demand by passengers and the stagnant growth of transportation infrastructure capacity, particularly in urban areas, has caused dramatic impacts on traffic condition, the environment, public health, and energy consumption. Consequently, the development of sustainable and resilient transportation systems has b ...
  • Revegetation Success and Weed Resilience of Wyoming RightofWay Reclamation Data Management Plan
    Revegetation Success and Weed Resilience of Wyoming Right-of-Way Reclamation [Data Management Plan]
    Hufford, Kristina ;
    Moine, Joellyn
    2023-01-01 | PDF
    Objectives are to evaluate different reclamation seed mixes along roadsides over twenty years to determine the rate of reseeding success and better define combinations of species and site variables that contribute to successful revegetation outcomes. Sites and seed mixes will be evaluated for resilience to invasion by high impact species such as ch ...
  • Pedestrian and Bicycle Improvement Scoring Method for SHIFT2024
    Pedestrian and Bicycle Improvement Scoring Method for SHIFT–2024
    Stamatiadis, Nikiforos ;
    Korostina, Daria
    2023-01-01 | PDF
    State transportation agencies have limited funding to deliver multimodal transportation programs that address the needs of all users. To allocate project funding in an impartial and objective manner, many agencies have adopted data-driven scoring systems that are used to evaluate the merits of proposed capital improvement projects. The Kentucky Tra ...
  • Safety Enhancements at ShortStorageSpace Railroad Crossings
    Safety Enhancements at Short-Storage-Space Railroad Crossings
    Das, Subasish ;
    Warner, Jeffery
    2023-01-01 | PDF
    A short storage space railroad crossing has insufficient distance between the crossing and the highway intersection stop line to safely store a design vehicle. The current Michigan Department of Transportation (MDOT) project (OR 19-032), led by Texas A&M Transportation Institute (TTI), aimed to provide guidance on these crossing types. This study e ...
  • Moving Forward Ohio Department of Transportation Research Program Newsletter 2023 Volume 1
    Moving Forward: Ohio Department of Transportation Research Program Newsletter: 2023 Volume 1
    Ohio’s Research Initiative for Locals
    2023-01-01 | PDF
    ORIL is a program designed to provide practice-ready solutions to real-world issues facing Ohio’s local transportation system through research. It’s a multi-organizational collaborative effort to improve the transportation network in Ohio’s counties, townships, cities and villages.
  • NJDOT Highway Safety Manual Predictive Safety Tool Research Technical Brief
    NJDOT Highway Safety Manual Predictive Safety Tool Research [Technical Brief]
    Hopwood, Cory ;
    Motamed, Megan
    2023-01-01 | PDF
    The goal of the predictive safety tool research is to help New Jersey meet its safety targets and reduce transportation fatalities and serious injuries on all public roads, including non-State-owned roads. The use of predictive safety tools can help reach that goal by expanding the data and capability of the NJDOT to conduct safety analyses that pr ...
  • FDOT Identification of Prospective Solutions for Florida Trade Imbalance and Empty Backhauls Summary
    FDOT Identification of Prospective Solutions for Florida Trade Imbalance and Empty Backhauls [Summary]
    Fitzgerald, Rickey ;
    Ozkul, Seckin
    2023-01-01 | PDF
    The goal of this project was to identify sites and counties that have the greatest need for empty backhauling relief in Florida, and then evaluate high-performing manufacturing industries that might work for those areas. If manufacturing could increase in those places, empty backhauling could likewise be reduced.
  • Developing Means of Compliance for eVTOL Vehicles Phase II Final Report
    Developing Means of Compliance for eVTOL Vehicles: Phase II Final Report
    Klyde, D H ;
    Jones, M. G.
    2023-01-01 | PDF
    Development of new air vehicles types (e.g., personal air vehicles, urban taxis, etc.) have led to a proliferation of Vertical Takeoff and Landing (VTOL) vehicle concepts including electric vehicles, many of which are well funded and are in various stages of prototype development and testing. These vehicles almost exclusively feature fly-by-wire (F ...
  • A Strategic Assessment of Needs and Opportunities for the Wider Adoption of Electric Vehicles in Indiana Phase 2
    A Strategic Assessment of Needs and Opportunities for the Wider Adoption of Electric Vehicles in Indiana [Phase 2]
    Ju, Ha Kyun ;
    Kim, Tae Rim
    2023-01-01 | PDF
    The primary objective of this study was to assess the challenges and opportunities associated with the provision of appropriate infrastructure to support electric vehicle (EV) operations and electrification across Indiana. A secondary objective of this study was to develop a strategic plan for the Indiana Department of Transportation (INDOT) that o ...
  • Seat Belt Use in 2022 Overall Results Traffic Safety Facts
    Seat Belt Use in 2022 – Overall Results [Traffic Safety Facts]
    United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis
    2023-01-01 | PDF
    This research note examines seat belt use in 2022. The national estimate of seat belt use by adult front-seat passengers in 2022 was 91.6 percent, a record high although not statistically different (at the 0.05 level) from 90.4 percent observed in 2021. The seat belt use rate estimate represents the percentage of occupants who are belted during an ...
  • Deploying Digital Trust for Places and Routines DTPR in DC Testing A Methodology for Increasing Legibility and Enabling Public Feedback for Technology in the Public Realm
    Deploying Digital Trust for Places and Routines (DTPR) in DC: Testing A Methodology for Increasing Legibility and Enabling Public Feedback for Technology in the Public Realm
    Farra, Jason ;
    Lu, Jacqueline
    2023-01-01 | PDF
    The Digital Trust for Places and Routines (DTPR) open-source standard was tested as part of a Pedestrian Safety Technology Pilot Sandbox project rolled out by DDOT and their consultant. The DTPR standard was an effective tool for gathering and organizing privacy and data collection related information about each technology that was deployed as part ...
  • Implementing Epoxy Injection in Concrete Overlaid Bridge Decks
    Implementing Epoxy Injection in Concrete Overlaid Bridge Decks
    Baah, Prince
    2023-01-01 | PDF
    Concrete overlays have proven to be an effective maintenance treatment as they slow de-icing chemical and water penetration into the original deck surface. Typically, due to vibration, structural flexibility, and a weak bond between the concrete overlay and deck concrete (potentially because of poor construction), de-bonding develops at the boundar ...
  • Using Advanced Data Analytics to Reduce Snowplow Fuel Consumption Technical Summary
    Using Advanced Data Analytics to Reduce Snowplow Fuel Consumption [Technical Summary]
    Huneke, Joseph (Joe) ;
    Northrop, Will
    2023-01-01 | PDF
    Snowplows use substantial amounts of fuel to keep Minnesota’s winter roads safe and accessible. MnDOT spends over $2 million on diesel fuel annually for plowing operations. Reducing vehicle fuel consumption, in addition to cost savings, would help MnDOT meet its sustainability goal to achieve a 30% reduction in greenhouse gases (GHG) from 2005 leve ...
  • Identifying Microtransit Service Areas Through Microsimulation
    Identifying Microtransit Service Areas Through Microsimulation
    Macfarlane, Gregory S ;
    Atchley, S. Hayden
    2023-01-01 | PDF
    Demand-responsive microtransit services have operated in Utah since a pilot program debuted in Fall 2019. The Utah Transit Authority (UTA) and its partners see such services as providing key mobility in transit-limited areas, but how to prioritize which areas receive such services is an open question. In this research, we present a multi-agent dail ...
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