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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 7661 - 7680 of 36114 results
  • Mildly Contaminated Soil Distribution Assessment Final Report
    Mildly Contaminated Soil Distribution Assessment: Final Report
    Monette, Stephanie ;
    Crocetti, Charles
    2017-09-01 | PDF
    The Department’s Divisions of Operations and Project Development generate large volumes of mildly contaminated soil (MCS) and Limited Reuse Soil (LRS). These MCSs/LRSs contain non-point sourced anthropogenic impacts, with contaminant concentrations above natural background conditions. Additionally, available data indicates the presence of several m ...
    Supporting Files
  • Assessment of continuous deflection measurement devices in Louisiana rolling wheel deflectometer final report 581
    Assessment of continuous deflection measurement devices in Louisiana - rolling wheel deflectometer : final report 581.
    Elseifi, Mostafa A. ;
    Elbagalati, Omar
    2017-09-01 | PDF
    The use of the Rolling Wheel Deflectometer (RWD), which measures deflections at highway speeds, offers the potential to characterize the structural capacity of pavements without delays and in a cost-effective way. The objective of this study was twofold. First, this project evaluated pre-developed structural capacity indicators in predicting paveme ...
  • MANUAL OF TEMPORARY EROSION CONTROL PRODUCTS FOR ROADSIDE DITCHES
    MANUAL OF TEMPORARY EROSION CONTROL PRODUCTS FOR ROADSIDE DITCHES
    Elzarka, Hazem ;
    Gao, Ce
    2017-09-01 | PDF
    Sediment continues to be the primary pollutant by volume in Ohio's streams and rivers. Unvegetated roadside ditches' side slopes and bottoms erode and contribute tons of sediment annually to local receiving streams. Pollutants attach themselves to sediments and are transported by the stormwater runoff throughout the watershed, degrading the water q ...
  • Assessment of limestone blended cements for transportation applications final report
    Assessment of limestone blended cements for transportation applications : final report.
    Kurtis, Kimberly E ;
    Kahn, Lawrence F.
    2017-09-01 | PDF
    This research assessed the applicability of Type IL cements satisfying AASHTO M240 specifications for use in transportation applications in place of Type I/IIcements which satisfy AASHTO M 85 specifications for construction oftransportation structures. Type I/II and Type IL cements from five producers wereinvestigated. The cements and both mortars ...
  • Installation Guidance for Centerline and Edgeline Rumble Strips in Narrow Pavements
    Installation Guidance for Centerline and Edgeline Rumble Strips in Narrow Pavements
    Savolainen, Peter T. ;
    Sharma, Anuj
    2017-09-01 | PDF
    Shoulder rumble strips (SRS) and centerline rumble strips (CLRS) on two-lane rural highways are proven safety countermeasures. Placement of both SRS and CLRS can usually be accommodated within wide pavements (24 ft or greater paved width) without issue. However, proper placement of one or both is less straightforward for highways with paved widths ...
  • Implementation Guidance for Accelerated Bridge Construction in South Dakota Research Brief
    Implementation Guidance for Accelerated Bridge Construction in South Dakota : Research Brief
    Pei, Shiling ;
    Wehbe, Nadim I.
    2017-09-01 | PDF
    Investigate typical accelerated bridge construction methods and their applicability in South Dakota. A study was conducted to investigate the implementation of accelerated bridge construction (ABC) in South Dakota. The main objective of this study was to implement a systematic method for evaluating ABC techniques to determine their applicability to ...
  • Recent Advances in Top of Rail Onboard Locomotive Application
    Recent Advances in Top of Rail Onboard Locomotive Application
    Cotter, J ;
    VanderMarel, Joel
    2017-09-01 | PDF
    Managing the Top Of Rail (TOR) wheel/rail coefficient of friction, using friction modifiers (FM), has consistently demonstrated significant benefits to the heavy haul industry including fuel/energy savings, wheel & rail wear reduction, and reduced state of stress of the track infrastructure. Traditionally, the preferred method of FM application has ...
  • Safe main street highways part I Washington state collision data and geocoding
    Safe main street highways part I : Washington state collision data and geocoding.
    Moudon, Anne Vernez ;
    Kang, Mingyu
    2017-09-01 | PDF
    This project contributes to the Washington State Strategic Highway Safety Plan, whose goals areto achieve zero road fatality and serious injury by 2030 and to reduce the number of pedestriansand bicyclists involved in motor-vehicle collisions on state highways. The study focused on“main street highways” (MSHs), which are stretches of State Routes t ...
  • The Rise of OnDemand Instant Deliveries in European Cities
    The Rise of On-Demand 'Instant Deliveries' in European Cities
    Dablanc, Laetitia ;
    Morganti, Eléonora
    2017-09-01 | PDF
    This exploratory paper contributes to a new body of research that investigates the potential of digital market places to disrupt transport and mobility services. We are specifically looking at the urban freight sector, where numerous app-based services have emerged in recent years. The paper specifically looks at 'instant deliveries,' i.e. services ...
  • Longterm corrosion protection of bridge elements reinforcing materials in concrete final report
    Long-term corrosion protection of bridge elements reinforcing materials in concrete : final report.
    Van Dyke, Christopher ;
    Meade, Bobby
    2017-09-01 | PDF
    Preventing or mitigating the corrosion of reinforcing steel in bridge decks is a major challenge for state transportation agencies. With agency budgets stretched thinner every year, they must implement strategies to extend the service lives of bridges and other critical structures. As such, it is imperative for them to adopt cost effective material ...
  • PrepME Software Implementation and Enhancement
    Prep-ME Software Implementation and Enhancement
    Li, Joshua Q. ;
    Wang, Kelvin C.P.
    2017-09-01 | PDF
    Highway agencies across the United States are moving from empirical design procedures towards the mechanistic-empirical (ME) based pavement design. Even though the Pavement ME Design presents a new paradigm shift with several dramatic improvements, it requires extensive data needs for the calibration and implementation process. Through the transpor ...
  • A Framework for Assessing Feasibility of TransitOriented Development TOD Project Sites
    A Framework for Assessing Feasibility of Transit-Oriented Development (TOD) Project Sites
    Sharma, Avi ;
    Strong, Kelly C.
    2017-09-01 | PDF
    After the Second World War, the United States saw a decline in ridership on transit systems, which eventually resulted in the dismantling and abandonment of many rail systems. The primary mode of public transportation shifted from transit to buses. It used the same streets and competed with the same infrastructure capacity as automobiles. For this ...
  • A Framework for Assessing Feasibility of TransitOriented Development TOD Project Sites Research Brief
    A Framework for Assessing Feasibility of Transit-Oriented Development (TOD) Project Sites : Research Brief
    Ozbek, Mehmet E. ;
    Strong, Kelly C.
    2017-09-01 | PDF
    This research answers the question: How can a transit agency choose among alternative TOD locations within a transit network? The ultimate objective of the research is to develop a decision support framework which can be used by transit agencies when choosing TOD site by incorporating their unique factors and weights. This research included a compr ...
  • Performance Evaluation of Rigid Snow Supporting Structures at the Milepost 151 Avalanche Jackson Wyoming
    Performance Evaluation of Rigid Snow Supporting Structures at the Milepost 151 Avalanche, Jackson, Wyoming
    Hewes, Joshua T.
    ORCID ICON IMG
    2017-09-01 | PDF
    In order to validate the methods used to design a novel, rigid snow supporting structure system, a research project to experimentally monitor for two winter seasons and visually inspect it over three summers was performed for WYDOT through their Research Center. One snow supporting structure was instrumented with pressure transducers to record down ...
  • Bridge maintenance program for the City of Columbia Missouri tech transfer summary
    Bridge maintenance program for the City of Columbia, Missouri : tech transfer summary.
    Washer, Glenn ;
    Brown, Henry
    2017-09-01 | PDF
    The primary goal of this research was to extend the service lives ofbridges in Columbia, Missouri. The overarching objective of the projectwas to develop bridge maintenance and preservation guidelines thatfocus on practical and implementable technologies and procedures forextending bridge service life, reducing maintenance costs, and ensuringsafety ...
  • Examining Distracted Drivers Underestimation of Time and Overestimation of Speed
    Examining Distracted Drivers' Underestimation of Time and Overestimation of Speed
    Knodler, Michael A. ;
    Keklikoglou, Andronikos
    2017-09-01 | PDF
    Thirty-four drivers participated in a driving simulator experiment that investigated time and speed perception as it related to cognitive workload resulting from secondary tasks. Each participant drove the virtual drive twice, once with either an audio or a map task and again with no distractions as a control. Participants knew from a practice driv ...
  • Seismic Performance of SelfConsolidating Concrete Bridge Columns Research Brief
    Seismic Performance of Self-Consolidating Concrete Bridge Columns : Research Brief
    Wehbe, Nadim I. ;
    Ghadban, Ahmad A.
    2017-09-01 | PDF
    Rectangular bridge columns in high seismic areas require high amounts of confining steel. Self consolidating concrete is ideal for the construction of concrete members with high steel congestion. However, there is lack of data on the seismic performance of rectangular self consolidating concrete bridge columns. The study had two main objectives: 1) ...
  • Standardizing Lightweight Deflectometer Modulus Measurements for Compaction Quality Assurance Research Summary
    Standardizing Lightweight Deflectometer Modulus Measurements for Compaction Quality Assurance: Research Summary
    Schwartz, Charles W.
    2017-09-01 | PDF
    The mechanistic-empirical pavement design method requires the elastic resilient modulus as the key input for characterization of geomaterials. Current density-based QA procedures do not measure resilient modulus. Additionally, the density-based methods do not incorporate the stiffness changes in unconventional materials over time due to moisture co ...
  • Seismic Performance of SelfConsolidating Concrete Bridge Columns
    Seismic Performance of Self-Consolidating Concrete Bridge Columns
    Wehbe, Nadim I. ;
    Ghadban, Ahmad A.
    2017-09-01 | PDF
    The high amount of confining lateral steel required by seismic design provisions for rectangular bridge columns can cause steel congestion. The high amount of confining steel may hinder the placement of conventional concrete (CC). Self-consolidating concrete (SCC) eliminates or reduces concrete placement and consolidation issues in concrete members ...
  • Designing the AllinOne Vermont Transportation Survey
    Designing the All-in-One Vermont Transportation Survey
    Aultman-Hall, Lisa ;
    Dowds, Jonathan
    2017-09-01 | PDF
    This project examined recent survey data from Vermont and travel survey approaches from non-Vermont agencies to develop a set of recommendations for an on-going, coordinated approach to transportation data collection for transportation and planning agencies including the Vermont Agency of Transportation (VTrans) and the Chittenden County Regional P ...
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