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Recent Additions
This page includes the documents that were newly added to the repository within the last 30 days.
41 - 60 of 474 results
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  • Assessment of the HAWK Crosswalk Traffic Signal
    Published:
    2019-02-20
    Abstract:
    The Pedestrian Hybrid Beacon (PHB) Crosswalk is a type of traffic control system, used to aid pedestrians safely crossing the street and to regulate traffic flow. This study examined the success of the first PHB installed in the state of Vermont. The...
    File Type:
    Filetype[PDF - 945.16 KB]
    Added:
    05/15/2019
  • Technical Memo – Hamburg Wheel Tracker Preliminary Data Analysis
    Published:
    2018-10-08
    Abstract:
    This memo documents the results of initial data analysis efforts by the UVM research team for pavement testing using the Hamburg Wheel Tracker (HWT) test by the Vermont Agency of Transportation’s Materials Testing & Certification Lab. The ultimate ...
    File Type:
    Filetype[PDF - 1.49 MB]
    Added:
    05/15/2019
  • Identifying Sensitive Structural and Hydraulic Parameters in a Bridge-Stream Network Under Flood Conditions
    Published:
    2019-02-08
    Abstract:
    The interactions between rivers, surrounding hydrogeological features, and hydraulic structures such as bridges are not well-established or understood at the network scale, especially under transient conditions. The cascading effects of local perturb...
    File Type:
    Filetype[PDF - 3.20 MB]
    Added:
    05/15/2019
  • Assessment of the Composite Arch Bridge
    Published:
    2018-12-21
    Abstract:
    The Vermont Agency of Transportation (VTrans) installed a Composite Arch Bridge (CAB) system, known as Bridge-in-A-Backpack™, on a low volume road in a rural setting. The value of using this system is the potential to use smaller and lighter constr...
    File Type:
    Filetype[PDF - 3.54 MB]
    Added:
    05/15/2019
  • Assessment of Super-Slab, a Precast Concrete Bridge Approach Slab
    Published:
    2018-12-13
    Abstract:
    With a growing amount of highway infrastructure in need of reconstruction or rehabilitation and ever-increasing construction costs, State Agencies are seeking cost effective methods of increasing the service life of infrastructure and reducing constr...
    File Type:
    Filetype[PDF - 2.19 MB]
    Added:
    05/15/2019
  • Assessment of the 40” Wide Paving Skid Box for Preventative Maintenance
    Published:
    2018-12-13
    Abstract:
    VTrans has typically employed common preventative maintenance treatments (PMTs) such as bituminous crack fill sealant, chip seal, micro-surfacing, slurry seal, cape seal, fog seal, paver placed surface seal, ultra-thin bituminous overlay, cold millin...
    File Type:
    Filetype[PDF - 1.53 MB]
    Added:
    05/15/2019
  • Pavement Marking Comparison Study – I-89 Liquid Markings
    Published:
    2018-12-04
    Abstract:
    Pavement markings provide an important means of communication for all roadway users and must be capable of conveying information during inclement weather and evening hours when there may be little to no contribution from overhead lighting. The follow...
    File Type:
    Filetype[PDF - 11.99 MB]
    Added:
    05/15/2019
  • Pavement Condition Study
    Published:
    2018-09-28
    Abstract:
    The purpose of this study is to gather feedback from the traveling public on the performance measures and targets that are used to guide decisions by the Vermont Agency of Transportation (VTrans) on the investment, timing and location of roadway pavi...
    File Type:
    Filetype[PDF - 2.55 MB]
    Added:
    05/15/2019
  • Ways to Consider Driverless Vehicles in Virginia Long Range Travel Demand Models
    Published:
    2019-03-01
    Abstract:
    Regional travel demand models are an institutionalized element of the transportation planning process and require multiple years to develop, calibrate, and deploy. Because transportation planners are being asked immediately how a new technology, i.e....
    File Type:
    Filetype[PDF - 2.89 MB]
    Added:
    05/15/2019
  • NCDOT Customer Service Survey 2016–17
    Published:
    2017-08-26
    Abstract:
    NCDOT provides transportation services across North Carolina for a variety of functions and uses. NCDOT identified customer satisfaction as a component of its 2015-2017 Strategic Plan, and dashboard, and measured customer service through a statewide ...
    File Type:
    Filetype[PDF - 2.35 MB]
    Added:
    05/15/2019
  • A Multimodal Network Approach to the Inland and Coastal Waterway System
    Published:
    2018-12-15
    Abstract:
    The inland waterway system carries a significant percentage of the national freight. Maintenance operations including dredging and dam repair are important to maintaining the effective and efficient operation of the system. Dredging projects are for ...
    File Type:
    Filetype[PDF - 629.19 KB]
    Added:
    05/15/2019
  • Performance Evaluation of Glass Fiber Reinforced Polymer (GFRP) Reinforcing Bars Embedded in Concrete Under Aggressive Environments [Summary]
    Published:
    2019-04-01
    Abstract:
    Many concrete structures in Florida are reinforced with steel bars. Combining concrete and steel produces extremely strong structures that would not be possible with concrete alone. However, in Florida’s humid environments, moisture or salt can pen...
    File Type:
    Filetype[PDF - 219.72 KB]
    Added:
    05/15/2019
  • QUEWZ Work Zone Software: Literature Search and Methodology Review
    Published:
    2019-01-01
    Abstract:
    This report documents the results of a literature review and methodological analysis into the design and technical basis of the QUEWZ work zone road user cost estimation software tool. The report documents how key formulas/algorithms within the QUEWZ...
    File Type:
    Filetype[PDF - 1.72 MB]
    Added:
    05/15/2019
  • Cognitive Attention Models for Driver Engagement in Intelligent and Semi-autonomous Vehicles
    Published:
    2018-09-30
    Abstract:
    The focus of this project is to improve the state-of-the-art in human cognitive modeling in order to more accurately describe the human-machine interfaces that take place in the pre-crash scenarios. This project develops a cognitive attention model t...
    File Type:
    Filetype[PDF - 1.20 MB]
    Added:
    05/15/2019
  • Field Analysis of Wood Guardrail Post Decay
    Published:
    2018-12-01
    Abstract:
    Wood guardrail posts can be inspected for decay using a non-destructive testing (NDT) technique called stress wave timing (SWT). This project conducted a field investigation on approximately 500 wood guardrail posts using SWT and then analyzed availa...
    File Type:
    Filetype[PDF - 2.41 MB]
    Added:
    05/15/2019
  • Premature Failure of Concrete Patching: Reasons and Resolutions
    Published:
    2019-03-01
    Abstract:
    The performance of concrete patches in continuously reinforced concrete pavement in Virginia varies from less than 1 year to many years. The purpose of this study was to determine the causes of premature repair failure in continuously reinforced conc...
    File Type:
    Filetype[PDF - 2.58 MB]
    Added:
    05/15/2019
  • Highway Patrol Investment Levels vs. Crash Outcomes
    Published:
    2018-12-01
    Abstract:
    As a part of an effort to improve safety and evaluate optimal levels of investment in trooper patrols, Alaska’s Department of Transportation and Public Facilities (DOT&PF) and Alaska State Troopers (AST) with the coordination of the University of A...
    File Type:
    Filetype[PDF - 3.65 MB]
    Added:
    05/15/2019
  • Present Practices of Highway Transportation of Hazardous Materials
    Published:
    1990-05-01
    Abstract:
    This report summarizes the state of the art of safe management materials transportation by highway. The report includes a review of literature related to hazardous materials transportation safety; a review of the responsibilities and current practice...
    File Type:
    Filetype[PDF - 11.97 MB]
    Added:
    05/15/2019
  • Caltrans Climate Change Vulnerability Assessments: District 4
    Published:
    2018-01-01
    Abstract:
    The following report was developed for the California Department of Transportation (Caltrans) to summarize a vulnerability assessment conducted for assets in Caltrans District 4. The assessment was developed to specifically identify the potential eff...
    File Type:
    Filetype[PDF - 10.54 MB]
    Added:
    05/15/2019
  • Caltrans Climate Change Vulnerability Assessments: District 6
    Published:
    2018-07-01
    Abstract:
    The following report was developed for the California Department of Transportation (Caltrans) and summarizes a vulnerability assessment conducted for the portion of State Highway System (SHS) in Caltrans District 6. Though there are multiple definiti...
    File Type:
    Filetype[PDF - 5.81 MB]
    Added:
    05/15/2019
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