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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 131 results
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  • Vehicle Inventory and Use Survey 2002 [supporting datasets]
    Published:
    2004-12-01
    Abstract:
    The Vehicle Inventory and Use Survey (VIUS) provides data on the physical and operational characteristics of the nation's truck population. Its primary goal is to produce national and state-level estimates of the total number of trucks. The sample co...
    File Type:
    Filetype[PDF - 112.86 KB]
    Added:
    11/15/2019
  • Omnibus Household Survey (OHS) 2003-08 [supporting datasets]
    Published:
    2003-08-21
    Abstract:
    The Bureau of Transportation Statistics (BTS) conducts the Omnibus Household Survey (OHS) to monitor public expectations of and satisfaction with the transportation system and to gather event, issue, and mode-specific information. OHS, which is condu...
    File Type:
    Filetype[PDF - 114.62 KB]
    Added:
    11/06/2019
  • Omnibus Household Survey (OHS) 2003-10 [supporting datasets]
    Published:
    2003-10-27
    Abstract:
    The Bureau of Transportation Statistics (BTS) conducts the Omnibus Household Survey (OHS) to monitor public expectations of and satisfaction with the transportation system and to gather event, issue, and mode-specific information. OHS, which is condu...
    File Type:
    Filetype[PDF - 114.51 KB]
    Added:
    11/06/2019
  • Omnibus Household Survey (OHS) 2009-10 [supporting datasets]
    Published:
    2009-10-01
    Abstract:
    The Bureau of Transportation Statistics (BTS) conducts the Omnibus Household Survey (OHS) to monitor public expectations of and satisfaction with the transportation system and to gather event, issue, and mode-specific information. OHS, which is condu...
    File Type:
    Filetype[PDF - 115.61 KB]
    Added:
    11/06/2019
  • Further Validation of Safety Culture Measurement Tool for Improving Safety in Commuter Rail Operations
    Published:
    2018-10-01
    Abstract:
    Building upon the development of a measure of safety culture based on a simplified two-factor model of meaning and behavior, a further validation study of the safety culture instrument was undertaken. The Safety Culture Assessment Survey (SCAS) was a...
    File Type:
    Filetype[PDF - 1.52 MB]
    Added:
    11/04/2019
  • Survey and Economic Analysis of Pavement Impacts from Studded Tire Use in Alaska
    Published:
    2019-05-01
    Abstract:
    In cold regions, such as Alaska, using studded tires is common among the public when driving in icy and snowy conditions. However,studded tires cause extensive wear to asphalt pavement, reducing pavement life. Almost 22 years have passed since the Al...
    File Type:
    Filetype[PDF - 2.97 MB]
    Added:
    11/04/2019
  • Secondary Collisions and Injury Severity: A Joint Analysis Using Structural Equation Models
    Published:
    2018-02-01
    Abstract:
    This study aims to investigate the contributing factors to secondary collisions and the effects of secondary collisions on injury severity levels. Manhattan, which is the most densely populated urban area of New York City, is used as a case study.
    File Type:
    Filetype[PDF - 538.85 KB]
    Added:
    11/04/2019
  • Evacuation Zone Modeling under Climate Change: A Data-Driven Method
    Published:
    2017-12-01
    Abstract:
    Predetermined evacuation zones can be used to estimate the demand of evacuees, which is helpful in assessing the resilience of transportation systems in the presence of natural disasters. Evacuation zones defined based on current road networks and en...
    File Type:
    Filetype[PDF - 831.17 KB]
    Added:
    11/04/2019
  • A Multivariate Spatial Approach to Model Crash Counts by Injury Severity
    Published:
    2019-01-01
    Abstract:
    Conventional safety models rely on the assumption of independence of crash data, which is frequently violated. This study develops a novel multivariate conditional autoregressive (MVCAR) model to account for the spatial autocorrelation of neighboring...
    File Type:
    Filetype[PDF - 844.44 KB]
    Added:
    11/04/2019
  • Analysis of Traffic Crashes Involving Pedestrians Using Big Data: Investigation of Contributing Factors and Identification of Hotspots
    Published:
    2017-03-17
    Abstract:
    This article reports on a study undertaken to explore the use of big data in pedestrian risk analysis, specifically strategies to investigate contributing factors and hotspots (areas with high incidence of crashes). The authors analyzed large amounts...
    File Type:
    Filetype[PDF - 864.38 KB]
    Added:
    11/04/2019
  • Modeling the Salt Usage During Snow Storms: An Application of Hierarchical Linear Models with Varying Dispersion
    Published:
    2017-01-01
    Abstract:
    Snow can cause dangerous driving conditions by reducing pavement friction and covering road surface markings. Salt is widely used by highway maintenance managers in the United States to reduce the impact of snow or ice on traffic. For the development...
    File Type:
    Filetype[PDF - 1.20 MB]
    Added:
    11/04/2019
  • Implementation and Evaluation of a Buried Cable Roadside Animal Detection System and Deer Warning Sign
    Published:
    2019-05-01
    Abstract:
    Animal-vehicle collisions (AVC), and deer-vehicle collisions (DVC) in particular, are a major safety problem on Virginia roads. Mitigation measures such as improved fencing and location-specific driver alerts are being implemented and evaluated in Vi...
    File Type:
    Filetype[PDF - 1.76 MB]
    Added:
    11/04/2019
  • Computational Enhancements for the Virginia Department of Transportation’s Regional River Severe Storm Model: Phase II
    Published:
    2019-05-01
    Abstract:
    Climate change is projected to increase the risk of flooding, which can cause severe damage and threaten lives. This increased risk makes it even more important to accurately forecast potential flooding impacts. The report details efforts by the Univ...
    File Type:
    Filetype[PDF - 4.20 MB]
    Added:
    11/04/2019
  • Evaluation of FC-5 with PG 76-22 HP to Reduce Raveling [Brief]
    Published:
    2019-06-01
    Abstract:
    Road resurfacing involves removing the road’s worn and possibly damaged top layer and replacing it with fresh asphalt. This top layer is the friction course, and its composition has important effects on roadway performance. An open-graded friction ...
    File Type:
    Filetype[PDF - 102.44 KB]
    Added:
    11/04/2019
  • PERCEPT Indoor Navigation System for Visually Impaired: Beta Study
    Published:
    2019-09-01
    Abstract:
    Independent navigation through unfamiliar indoor spaces is beset with barriers for blind and visually impaired (BVI) individuals. A task that is spontaneous for people without disabilities has to be planned and coordinated with other individuals for ...
    File Type:
    Filetype[PDF - 19.48 MB]
    Added:
    11/04/2019
  • Evaluation of FC-5 with PG 76-22 HP to Reduce Raveling
    Published:
    2019-05-01
    Abstract:
    The objectives of this project were to assess the mechanical performance and durability of open-graded friction course FC-5 mixtures fabricated with a highly polymer-modified (HP) binder (that complied with the requirements of FDOT specifications, Se...
    File Type:
    Filetype[PDF - 5.23 MB]
    Added:
    11/04/2019
  • Strategic Highway Safety Plans – A Champion’s Guidebook to Saving Lives, Second Edition
    Published:
    2013-03-01
    Abstract:
    This document reviews the basic principles and important considerations concerning the development, implementation, and evaluation of a Strategic Highway Safety Plan (SHSP). It is intended as a resource for States to consult during examination of the...
    File Type:
    Filetype[PDF - 1.85 MB]
    Added:
    10/29/2019
  • Development of a Structure for a MIRE Management Information System
    Published:
    2013-01-01
    Abstract:
    Safety data are the key to making sound decisions on the design and operation of roadways. Integrating quality roadway and traffic data with crash data helps agencies make better decisions and more effective use of limited funds to improve safety. Th...
    File Type:
    Filetype[PDF - 1.97 MB]
    Added:
    10/29/2019
  • Guidelines for the Use of Variable Speed Limit Systems in Wet Weather
    Published:
    2012-08-24
    Abstract:
    This report provides guidance on the use of variable speed limit (VSL) systems in wet weather at locations where the operating speed exceeds the design speed and the stopping distance exceeds the available sight distance. The use of VSLs during incle...
    File Type:
    Filetype[PDF - 2.08 MB]
    Added:
    10/29/2019
  • Bicycle Road Safety Audit Guidelines and Prompt Lists
    Published:
    2012-05-01
    Abstract:
    Road Safety Audits (RSAs) are a formal safety examination of an existing or future roadway or off-road facility and are conducted by an independent, experienced, multidisciplinary team. The purpose of the Bicycle Road Safety Audit Guidelines and Prom...
    File Type:
    Filetype[PDF - 25.61 MB]
    Added:
    10/29/2019
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