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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 1581 - 1600 of 36873 results
  • Developing Guidelines for the Use of Lightweight Materials in Culvert Preservation
    Developing Guidelines for the Use of Lightweight Materials in Culvert Preservation
    Sun, Charlie ;
    Ashurst, Kean H.
    2024-05-01 | PDF
    This study addresses challenges that arise during highway embankment construction on road widening projects when additional fill is placed above existing culverts. Researchers conducted reduced-scale model laboratory tests to simulate culvert behavior under different loading conditions and to determine how well lightweight materials (LWMs) perform ...
  • Recruiting and Retaining Staff
    Recruiting and Retaining Staff
    Balyagati, Philip ;
    Ngereza, Abdul
    2024-05-01 | PDF
    The Ohio Department of Transportation (ODOT) has been challenged to address a shortage of staff due to staff turnover, less hiring of full-time staff, and increasing technological capabilities all of which have been exacerbated by the retirement of the baby-boomer generation from the workforce. It is imperative that ODOT explore and implement innov ...
  • The Impact of Diamond Grind Pavement Resurfacing on PM10 Emissions
    The Impact of Diamond Grind Pavement Resurfacing on PM10 Emissions
    Miech, Jason ;
    Fraser, Matthew
    2024-05-01 | PDF
    An assessment of tire-wear emissions was conducted to identify differences due to diamond ground and asphalt rubber asphalt concrete friction surfaces. The evaluation involved collecting representative aerosol samples from local freeways with both surface types under different meteorological conditions and with varying traffic conditions. The field ...
  • Develop a Methodology for Pavement Drainage System Rating Research Project Capsule 242P
    Develop a Methodology for Pavement Drainage System Rating: Research Project Capsule [24–2P]
    Chen, Qiming ;
    Rupnow, Tyson
    2024-05-01 | PDF
    In the realm of pavement engineering, the management of water and its impact on infrastructure longevity is of paramount importance. Water can lead to various degrees of damage to roadways, ranging from the formation of potholes to less visible issues such as the weakening of subsurface materials. One of the primary reasons for pavement failures is ...
  • Recruiting and Retaining Staff Fact Sheet
    Recruiting and Retaining Staff [Fact Sheet]
    Balyagati, Philip ;
    Ngereza, Abdul
    2024-05-01 | PDF
    The Ohio Department of Transportation (ODOT) has been challenged to address a shortage of staff due to staff turnover, less hiring of full-time staff and increasing technological capabilities all of which have been exacerbated by the retirement of the baby-boomer generation from the workforce. It is imperative that ODOT explore and implement innova ...
  • Evaluation of Ramp Metering Effectiveness Along the I35 Corridor in the Kansas City Metropolitan Area
    Evaluation of Ramp Metering Effectiveness Along the I-35 Corridor in the Kansas City Metropolitan Area
    Kondyli, Alexandra ;
    Schrock, Steven D.
    2024-05-01 | PDF
    This research investigated the safety and operational benefits of ramp metering along the I-35 corridor in the Kansas City metropolitan area. A before-and-after study was conducted to compare selected performance measures, with a “before” period from August 2015 to December 2015 and an “after” period from October 2021 to February 2022. The research ...
  • Base Stabilization Additives Effect on Granular Equivalency GE
    Base Stabilization Additives – Effect on Granular Equivalency (GE)
    Jibon, Md ;
    Mahedi, Masrur
    2024-05-01 | PDF
    Base stabilization additives are used to increase the strength and stiffness of road foundations on weak and susceptible soils. The Minnesota Department of Transportation (MnDOT) quantifies the structural contribution of pavement layers by introducing granular equivalency (GE) factors. While numerous additives exist for improving the performance of ...
  • Leveraging Abandoned Railroad Tunnels for Bat Conservation Fact Sheet
    Leveraging Abandoned Railroad Tunnels for Bat Conservation [Fact Sheet]
    Johnson, Joseph S ;
    Kuchta, Shawn R
    2024-05-01 | PDF
    This report summarizes a study on abandoned tunnels' importance to bat populations in Ohio. We located 50 tunnels and surveyed 40 of these for one or more winter season. Little brown myotis, big brown bats, and tricolored bats were the most commonly observed species, with varying preferences for tunnel features. Key predictors of bat use such as tu ...
  • Effects of Nontraditional Messages in Dynamic Message Signs on Improving Safety Compliance and Avoiding Distraction
    Effects of Nontraditional Messages in Dynamic Message Signs on Improving Safety, Compliance, and Avoiding Distraction
    Zhai, Yuhui ;
    Ouyang, Yanfeng
    2024-05-01 | PDF
    This project develops capability for future studies on the effects of nontraditional messages in dynamic message signs on improving driver safety and compliance and avoiding distractions. An online survey and a driving simulation game were designed, and a pilot run was conducted with a small number of students in the University of Illinois Urbana C ...
  • Updates to MechanisticEmpirical Design Inputs for Illinois Flexible Pavements
    Updates to Mechanistic-Empirical Design Inputs for Illinois Flexible Pavements
    Hajj, Ramez M ;
    Thompson, Marshall R.
    2024-05-01 | PDF
    This study reviews the Illinois Department of Transportation’s full-depth asphalt, limiting strain criterion, and asphalt over rubblized concrete design procedures, considering technological advancements in hot-mix asphalt—namely, the increased use of recycled materials and modified asphalt binders. The researchers evaluated the current |E*| algori ...
  • GroundIn Edge and Centerline Rumble Strip Rumble Stripe Evaluation and Best Practices Research Project Capsule 241SA
    Ground-In Edge and Centerline Rumble Strip / Rumble Stripe Evaluation and Best Practices: Research Project Capsule [24–1SA]
    Hassan, Hany ;
    Rupnow, Tyson
    2024-05-01 | PDF
    The primary objective of this research is to evaluate the pattern, placement, and noise level of the rumble strips/rumble stripes installed on Louisiana highways to ensure that the best standards are used.
  • Benefit Analysis of Barrier Inlet Screens
    Benefit Analysis of Barrier Inlet Screens
    Kerns, Justin ;
    Grimm, Alec
    2024-05-01 | PDF
    The Benefit Analysis of Barrier Inlet Screens research project studied the effectiveness of screening devices at preventing debris from entering stormwater inlets along highway barrier walls. This research was focused on large trash and debris, as opposed to sediment and dissolved solids. A variety of proprietary and non-proprietary screen devices ...
  • Robust Wireless Skin Sensor Networks for LongTerm Fatigue Crack Monitoring of Bridges Phase I Tech Transfer Summary
    Robust Wireless Skin Sensor Networks for Long-Term Fatigue Crack Monitoring of Bridges (Phase I) [Tech Transfer Summary]
    Laflamme, Simon
    ORCID ICON IMG
    2024-05-01 | PDF
    Develop sensing skin technology that can be deployed over strategic areas to detect, localize, and assess fatigue cracks • Provide sensing skin with autonomous capabilities, including power harvesting, onboard processing, and wireless transmission • Transform sensing skin signal into an index readily interpretable by infrastructure operators • Demo ...
  • Methods for Sealing Vertical Cracks on Concrete Structures Summary
    Methods for Sealing Vertical Cracks on Concrete Structures [Summary]
    Antunes, Rodrigo ;
    Sufian, Abu Ahmed
    2024-05-01 | PDF
    The objective of this study was to document best practices for sealing cracks in concrete structures, especially substructures, which cannot be routinely inspected.
  • Best Practices for Boulevard Tree Selection
    Best Practices for Boulevard Tree Selection
    Miller, Susan ;
    Siro, Lia
    2024-05-01 | PDF
    Communities seeking success in placemaking and improved green space in the boulevards are encouraged to develop a Street Tree Master Plan. In 2008, the Minnesota Local Road Research Board developed The Road to a Thoughtful Street Master Plan: A practical guide to systematic planning and design for communities to evaluate their goals and objectives ...
  • Estimation of Benefits from Pedestrian and Bicycle Improvements
    Estimation of Benefits from Pedestrian and Bicycle Improvements
    Tzamakos, Dionysios ;
    Stamatiadis, Nikiforos
    2024-05-01 | PDF
    Delivering safe mobility for all users of the transportation system is a key priority of the Kentucky Transportation Cabinet (KYTC). Because many system users rely on pedestrian and bicycle facilities, it is critical for KYTC to balance pedestrian and bicycle facility accommodations with those for motorized users. Currently, the Strategic Highway I ...
  • Design and Analysis of Resilient Vehicular Platoon Systems over Wireless Networks
    Design and Analysis of Resilient Vehicular Platoon Systems over Wireless Networks
    Shui, Tingyu ;
    Saad, Walid
    2024-05-01 | PDF
    Connected vehicular platoons provide a promising solution to improve traffic efficiency and ensure road safety. Vehicles in a platoon utilize on-board sensors and wireless vehicle-to-vehicle (V2V) links to share traffic information for cooperative adaptive cruise control. To process real-time control and alert information, there is a need to ensure ...
  • 2019 NonTraffic Surveillance System Coding and Validation Manual
    2019 Non-Traffic Surveillance System Coding and Validation Manual
    United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis
    2024-05-01 | PDF
    The Non-Traffic Surveillance (NTS) system is a virtual data collection system of which one part is designed to gather data on fatalities and injuries that occur in nontraffic crashes, which can occur on private roads, driveways, and parking lots. The NTS program accepted potential crashes only from FARS analysts and from sampled Crash Report Sampli ...
  • Development of an Implementation Plan for Sustainable Transportation Infrastructure Systems in Iowa Tech Brief
    Development of an Implementation Plan for Sustainable Transportation Infrastructure Systems in Iowa [Tech Brief]
    Lee, Hosin “David”
    2024-05-01 | PDF
    The primary goal of this study is to develop an implementation plan for achieving more sustainable transportation infrastructure systems for Iowa DOT and local road agencies. The specific objective of this research is to develop a systemic methodology for identifying the best sustainable practices for implementation in transportation infrastructure ...
  • Performance and Design of Continuously Reinforced Concrete Pavements
    Performance and Design of Continuously Reinforced Concrete Pavements
    Sakulneya, Apidej ;
    Anderson, Connor
    2024-05-01 | PDF
    This report focuses on the calibration of a design framework for continuously reinforced concrete pavement (CRCP) developed in 2009 by using the most recent performance data acquired from existing CRCP sections in Illinois. Field performance data were used to update the fatigue damage to punchout model coefficients in the design framework. A sensit ...
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