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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 7521 - 7540 of 36114 results
  • Composite Action in Prestressed NU IGirder Bridge Deck Systems Constructed with Bond Breakers to Facilitate Deck Removal Technical Summary
    Composite Action in Prestressed NU I-Girder Bridge Deck Systems Constructed with Bond Breakers to Facilitate Deck Removal : Technical Summary
    Li, Chaohui ;
    Lequesne, Remy D.
    2017-11-01 | PDF
    Results are reported from tests of small-scale push-off and large-scale composite NU I-girder specimens conducted to establish an interface connection detail that (1) Facilitates in-situ removal of the bridge deck without damaging prestressed girders, and (2) Maintains composite action between the prestressed girder and reinforced concrete deck thr ...
  • Transportation Infrastructure Robustness Joint Engineering and Economic Analysis
    Transportation Infrastructure Robustness : Joint Engineering and Economic Analysis
    Berechman, Joseph ;
    Ghosn, Michel
    2017-11-01 | PDF
    The objectives of this study are to develop a methodology for assessing the robustness of transportation infrastructure facilities and assess the effect of damage to such facilities on travel demand and the facilities users’ welfare. The robustness of transportation facilities is related to two types of damage: a) longitudinal deterioration in faci ...
  • Expanding the Adoption on Private Lands BlowingandDrifting Snow Control Treatments and the Cost Effectiveness of Permanent versus NonPermanent Treatment Options
    Expanding the Adoption on Private Lands : Blowing-and-Drifting Snow Control Treatments and the Cost Effectiveness of Permanent versus Non-Permanent Treatment Options
    Current, Dean ;
    Wyatt, Gary
    2017-11-01 | PDF
    Previous research that estimated the costs and benefits of snow-fences for MnDOT in terms of a reduction in the costs of mitigating blowing-and-drifting snow problem areas (MN/RC 2012-03) demonstrated the ability of snow-fences to significantly lower those costs for MnDOT districts. To address lack of adoption, this project designed and tested an o ...
  • Effects of Bridge Surface Pavement Maintenance Activities on Asset Rating
    Effects of Bridge Surface & Pavement Maintenance Activities on Asset Rating
    Saeed, Tariq ;
    Qiao, Yu
    2017-11-01 | PDF
    Treatment effectiveness modeling is essential for asset performance modeling and predictions, and ultimately, for effective performance monitoring and feedback and for evaluating and comparing alternative treatments. Asset managers use these models to determine the expected incremental change of asset condition resulting from a future application o ...
  • Improving Access to Transit Through Crowdsourced Information
    Improving Access to Transit Through Crowdsourced Information
    Barbeau, Sean J.
    2017-11-01 | PDF
    The purpose of this research was to facilitate the ongoing collection of information from the public about potential areas of multimodal service and infrastructure improvements and easily share these problems with transit agencies, departments of transportation, and city and county governments. The research team implemented open-source software tha ...
    Supporting Files
  • LongTerm Monitoring of a Geosynthetic Reinforced Soil Integrated Bridge System GRSIBS
    Long‐Term Monitoring of a Geosynthetic Reinforced Soil Integrated Bridge System (GRS‐IBS)
    Meehan, Christopher L. ;
    Poggiogalle, Tyler M.
    2017-11-01 | PDF
    The geosynthetic reinforced soil integrated bridge system (GRS-IBS) is an innovative alternative to conventional bridge technology that utilizes closely spaced layers of geosynthetic reinforcement and compacted granular fill material to provide direct bearing support for structural bridge members. Using this technology, over 200 bridges in 44 state ...
  • Development of a Special Provision on the Use of Pervious Concrete As a Stormwater Management Tool in Parking Lots
    Development of a Special Provision on the Use of Pervious Concrete As a Stormwater Management Tool in Parking Lots
    Moruza, Gail M. ;
    Ozyildirim, H. Celik
    2017-11-01 | PDF
    The abundance of impervious surfaces in developed areas leads to increased threats from stormwater runoff. The contaminants carried in unmanaged stormwater runoff in addition to higher volumes of water damage the natural environment and put undue stress on ecosystems on which society depends for both recreation and industrial activities. Pervious c ...
  • Successes in Stewardship Californias North Coast Corridor Program Balances Infrastructure Demands and Environmental Stewardship
    Successes in Stewardship - California’s North Coast Corridor Program Balances Infrastructure Demands and Environmental Stewardship
    United States. Federal Highway Administration
    2017-11-01 | PDF
    Successes in Stewardship is a Federal Highway Administration (FHWA) bimonthly newsletter highlighting current best practices in stewardship and environmental review from around the country.
  • Lime Kiln Dust for Treated Subgrades Technical Summary
    Lime Kiln Dust for Treated Subgrades : Technical Summary
    Kakrasul, Jamal I. ;
    Parsons, Robert L.
    2017-11-01 | PDF
    Chemical and cementitious materials are often used to modify and stabilize the subgrade soils that serve as foundations for pavements. Improvement of the subgrade provides a better working platform for construction of the layers above and improves the strength of the pavement structure. Lime, cement, and fly ash have all been successfully used for ...
  • Fuel Cell Buses in US Transit Fleets Current Status 2017
    Fuel Cell Buses in U.S. Transit Fleets: Current Status 2017
    Eudy, Leslie ;
    Post, Matthew
    2017-11-01 | PDF
    This report, published annually, summarizes the progress of fuel cell electric bus (FCEB) development in the United States and discusses the achievements and challenges of introducing fuel cell propulsion in transit. The report provides a summary of results from evaluations performed by the National Renewable Energy Laboratory (NREL). NREL consider ...
  • Culvert Length and Interior Lighting Impacts to Topeka Shiner Passage
    Culvert Length and Interior Lighting Impacts to Topeka Shiner Passage
    Kozarek, Jessica ;
    Hatch, Jay
    2017-11-01 | PDF
    Culverts can act as barriers to fish passage for a number of reasons including insufficient water depth or excess velocity. In addition, concern is being raised over behavioral barriers where culvert conditions elicit an avoidance response that deters or slows fish movement. Long culverts can block sunlight creating a potential behavioral barrier a ...
  • Gravel Surfacing Guidelines for South Dakota
    Gravel Surfacing Guidelines for South Dakota
    Truschke, Carrie ;
    Seeds, Stephen B.
    2017-11-01 | PDF
    South Dakota’s low-volume roads (LVR) play an important role in the State’s economy, providing essential links not only within rural areas but also between rural and more populated areas. A significant portion of these roads are gravel, constructed with an assortment of different aggregate materials and under a range of governing specifications. Ge ...
  • Calibrating the Iowa pore index with mercury intrusion porosimetry and petrography
    Calibrating the Iowa pore index with mercury intrusion porosimetry and petrography.
    Hasiuk, Franciszek ;
    Firdaus, Muhammad
    2017-10-31 | PDF
    The Iowa Pore Index (IPI) test is a fast, non-destructive, inexpensive, and environmentally friendly test used by severalMidwestern state departments of transportation to determine the volume ratio of macropores to micropores in a coarse rockaggregate. When combined with x-ray diffraction and x-ray fluorescence, this method has been shown to be eff ...
  • A Study of Moisture Induced Material Loss of Hot Mix Asphalt HMA
    A Study of Moisture Induced Material Loss of Hot Mix Asphalt (HMA)
    Arepalli, Uma Maheswar ;
    Mallick, Rajib B.
    2017-10-31 | PDF
    Maine Department of Transportation has noticed the partial or complete loss of material within 2-3 years of construction in the traffic wheel path in the presence of moisture in few of their mixes. Regularly used moisture susceptibility tests are unable to detect the problem during mix design. The obvious reason is that the currently available test ...
  • Recycled Engine Oil Bottoms and Polyphosphoric Acid in Texas Binders Project Summary
    Recycled Engine Oil Bottoms and Polyphosphoric Acid in Texas Binders [Project Summary]
    Karki, Pravat ;
    Estakhri, Cindy K.
    2017-10-31 | PDF
    A Superpave performance grade (PG) binder specification was one of the products from the Strategic Highway Research Program (SHRP). Many state departments of transportation have adopted the Superpave PG specification since the completion of SHRP in 1993. A much wider range of crude oil sources are now being used to produce asphalt binders. Material ...
  • Modal Investment Comparison The Impact of Upper Mississippi River Lock and Dam Shutdowns on State Highway Infrastructure
    Modal Investment Comparison : The Impact of Upper Mississippi River Lock and Dam Shutdowns on State Highway Infrastructure.
    Perry, Ernest ;
    Adams, Teresa
    2017-10-30 | PDF
    This project reviews southbound agricultural shipments from the Upper Mississippi River originating from the states of Illinois, Iowa, Minnesota, Missouri, and Wisconsin to understand the potential impacts of shifting barge shipments to the parallel highway infrastructure. The project examines impacts to congestion on parallel highways, highway mai ...
  • Impact of Transit Stop Location on Pedestrian Safety Final Report
    Impact of Transit Stop Location on Pedestrian Safety [Final Report]
    Pessaro, Brian ;
    Catala, Martin
    2017-10-30 | PDF
    This research involved a GIS analysis of pedestrian crashes that occurred within 100 feet of bus stops in Broward County and Palm Beach County, Florida between 2011 and 2014. There were 357 such pedestrian crashes in Broward County and 221 in Palm Beach County. Only 18 of the crashes in Broward County, or 5 percent, involved a bus patron. In Palm B ...
  • A Study of the Traffic Safety at Roundabouts in Minnesota
    A Study of the Traffic Safety at Roundabouts in Minnesota
    Leuer, Derek
    2017-10-30 | PDF
    The first Minnesota modern roundabout was constructed in 1995. Since then, roundabouts have been built across the state by the Minnesota Department of Transportation, counties, and cities. There is no definitive count across Minnesota, but it is likely nearing 200 roundabouts across the state on all roads. They have become an increasingly popular i ...
  • Ohios Research Initiative for Locals Peer Exchange Report March 89 2017
    Ohio’s Research Initiative for Locals Peer Exchange Report, March 8-9, 2017
    Ohio. Dept. of Transportation
    2017-10-23 | PDF
    On March 8-9, 2017, the Ohio Department of Transportation (ODOT) hosted a peer exchange on behalf of the Ohio’s Research Initiative for Locals (ORIL) program. Peer exchanges provide an opportunity to foster best practices and evaluate processes with colleagues from other states and national organizations. This exchange focused on transportation res ...
  • Lightning and Surge Protection Grounding Bonding and Shielding Requirements for Facilities and Electronic Equipment 2017
    Lightning and Surge Protection, Grounding, Bonding, and Shielding Requirements for Facilities and Electronic Equipment [2017]
    United States. Department of Transportation. Federal Aviation Administration
    2017-10-18 | PDF
    This document mandates standard lightning protection, transient protection, grounding, bonding and shielding configurations and procedures and control of electrostatic discharge (ESD) for new facilities, modifications and upgrades to existing facilities, new equipment installations, and new electronic equipment used in the National Airspace Systems ...
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