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Recent Additions
This page includes the documents that were newly added to the repository within the last 30 days.
21 - 40 of 474 results
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  • Development and Demonstration of a Cost-Effective In-Vehicle Lane Departure and Advanced Curve Speed Warning System
    Published:
    2018-12-01
    Abstract:
    A Lane-Departure Warning System (LDWS) and Advance Curve-Warning System (ACWS) are critical among several Advanced Driver-Assistance Systems (ADAS) functions, having significant potential to reduce crashes. Generally, LDWS use different image process...
    File Type:
    Filetype[PDF - 2.64 MB]
    Added:
    05/15/2019
  • Improving Railroad Grade Crossing Safety: Accurate Prediction of Train Arrival Times for Emergency Response Management and Driver Decision Support
    Published:
    2019-02-01
    Abstract:
    Incidents at highway-rail grade crossings, locations where railroad tracks intersect surface streets at grade, are a primary driver of safety in rail transportation in the United States. Addressing safety at these locations through technology is a fo...
    File Type:
    Filetype[PDF - 4.15 MB]
    Added:
    05/15/2019
  • The Future of Mobility Series
    Published:
    2019-02-01
    Abstract:
    The Future of Mobility series highlighted emerging technologies in urban mobility and priorities for transportation industry change. The transportation landscape is rapidly changing as technology companies introduce new services to address existing t...
    File Type:
    Filetype[PDF - 1.71 MB]
    Added:
    05/15/2019
  • Safety Effects of Marked Versus Unmarked Crosswalks at Uncontrolled Locations Final Report and Recommended Guidelines
    Published:
    2005-09-01
    Abstract:
    Pedestrians are legitimate users of the transportation system, and they should, therefore, be able to use this system safely. Pedestrian needs in crossing streets should be identified, and appropriate solutions should be selected to improve pedestria...
    File Type:
    Filetype[PDF - 3.22 MB]
    Added:
    05/15/2019
  • Safety Effectiveness of Intersection Left- and Right-Turn Lanes
    Published:
    2002-07-01
    Abstract:
    This report presents the results of research that performed a well-designed before-after evaluation of the safety effects of providing left- and right-turn lanes for at-grade intersections. Geometric design, traffic control, traffic volume, and traff...
    File Type:
    Filetype[PDF - 1.49 MB]
    Added:
    05/15/2019
  • Rumble Strips
    Published:
    2006-01-01
    Abstract:
    This paper describes how roadway departures account for more than half of all roadway fatalities. Roadway departure fatalities, which include runoff- the-road (ROR) and head-on fatalities, are a serious problem in the United States. In 2003, there we...
    File Type:
    Filetype[PDF - 58.44 KB]
    Added:
    05/15/2019
  • Route 3A Bridge Over the Newfound River, Bristol
    Published:
    2000-08-01
    Abstract:
    The HPC bridge is a simple-span structure, 18.3 m (60 ft) long. The bridge consists of two travel lanes, shoulders, and one sidewalk. The bridge superstructure is 12.0 m (39.5 ft) wide and consists of four New England Bulb-Tee (NEBT) prestressed conc...
    File Type:
    Filetype[PDF - 52.40 KB]
    Added:
    05/15/2019
  • Roughness Trends of Flexible Pavements
    Published:
    1998-08-01
    Abstract:
    Roughness is widely regarded as the most important measure of pavement performance because it is the measure most evident to the traveling public. It greatly affects ride quality, safety, and vehicle operating costs. Therefore, understanding how and ...
    File Type:
    Filetype[PDF - 46.94 KB]
    Added:
    05/15/2019
  • Roadway Safety Hardware Management Systems Save Lives, Time, and Money
    Published:
    2004-04-01
    Abstract:
    Roadway safety is a serious national public health issue. In 2002, there were 42,815 fatalities and almost 3 million injuries on our Nation’s roads. In all, 6 million crashes were reported, costing an estimated financial loss of $230 billion. The U...
    File Type:
    Filetype[PDF - 301.64 KB]
    Added:
    05/15/2019
  • Roadway Safety Hardware Asset Management Systems Case Studies
    Published:
    2005-10-01
    Abstract:
    This study provides information to State DOTs on roadway safety hardware management systems that could help increase their use of state-of-the-practice techniques. This report was developed for State DOT personnel, particularly chief engineers and ot...
    File Type:
    Filetype[PDF - 1.17 MB]
    Added:
    05/15/2019
  • Roadway Human Factors and Behavioral Safety in Europe
    Published:
    2005-05-01
    Abstract:
    Human factors issues associated with roadway design and operations are critical components of improving highway safety. The Federal Highway Administration, American Association of State Highway and Transportation Officials, and National Cooperative H...
    File Type:
    Filetype[PDF - 3.47 MB]
    Added:
    05/15/2019
  • Road Weather Management Summary
    Published:
    2004-07-01
    Abstract:
    From 2001 to 2003, the Federal Highway Administration (FHWA) Road Weather Management program partnered with the National Weather Service (NWS) to conduct five research projects through the Cooperative Program for Operational Meteorology, Education an...
    File Type:
    Filetype[PDF - 180.93 KB]
    Added:
    05/15/2019
  • Road Safety Audits (RSA)
    Published:
    2006-01-01
    Abstract:
    There is a need for an independent, multidisciplinary process for identifying and documenting safety issues on new and existing roadways. The toll from traffic crashes remains an important health and economic issue in the United States. Each year nea...
    File Type:
    Filetype[PDF - 60.16 KB]
    Added:
    05/15/2019
  • Rigid Pavement Analysis and Design
    Published:
    1989-06-01
    Abstract:
    This study was conducted to characterize and compare currently available rigid pavement analysis models and design methods and to develop new rigid pavement designs to be evaluated in full scale experimental projects in an actual highway environment....
    File Type:
    Filetype[PDF - 60.86 MB]
    Added:
    05/15/2019
  • Identifying Potential Workzone Countermeasures Using Connected-Vehicle and Driving Data
    Published:
    2018-06-06
    Abstract:
    Work zones present an ongoing safety challenge to the road safety community. Traffic management in a work zone is done through movable, temporary elements, and the novelty and complexity of the situation can challenge even attentive drivers This proj...
    File Type:
    Filetype[PDF - 2.22 MB]
    Added:
    05/15/2019
  • Klondike Gold Rush National Park: Dyea Area Transportation Feasibility Study
    Published:
    2019-04-22
    Abstract:
    The purpose of the Dyea Area transportation feasibility study for Klondike Gold Rush National Historical Park (KLGO) is to understand current conditions for transit access between Skagway and Dyea and to evaluate where there is demand or opportunitie...
    File Type:
    Filetype[PDF - 3.75 MB]
    Added:
    05/15/2019
  • Assessment of the BDM Waterproofing Membrane System
    Published:
    2019-03-21
    Abstract:
    Concrete bridge deck deterioration is one of the most extensive bridge maintenance problems affecting service life. Moisture and chloride intrusion can accelerate concrete bridge deck distress. Waterproofing membranes, when applied properly, extend t...
    File Type:
    Filetype[PDF - 3.94 MB]
    Added:
    05/15/2019
  • Technical Memo – Concrete Pay Factor Analysis
    Published:
    2018-07-06
    Abstract:
    This memo documents the results of efforts by the UVM research team to develop an initial set of pay factors for payment of in-place concrete by the Vermont Agency of Transportation’s Materials Testing & Certification Lab. The project consisted of ...
    File Type:
    Filetype[PDF - 628.81 KB]
    Added:
    05/15/2019
  • Assessment of Poly-Carb Flexogrid Bridge Deck Overlay System
    Published:
    2019-04-08
    Abstract:
    Mark-163 Flexogrid by Poly-Carb is a high friction bridge deck overlay system that is designed to be used for the waterproofing and skid proofing of bridge decks. This product was tested on Town Highway 4, Bridge 8 in Waterford VT, as it passes over ...
    File Type:
    Filetype[PDF - 2.00 MB]
    Added:
    05/15/2019
  • Recycled Asphalt Shingles (RAS) in Town Gravel Roads-Initial Report
    Published:
    2019-03-06
    Abstract:
    Together, VTrans and VTANR-DEC are working to develop the use of Recycled Asphalt Shingles (RAS) as an aggregate additive to gravel roads. The idea for this project stemmed from a 2002 pilot of a RAP/RAS/Gravel used by Vermont towns in 2002 [1]. Avai...
    File Type:
    Filetype[PDF - 8.50 MB]
    Added:
    05/15/2019
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