The problem of truck loss-of-control accidents on interchange ramps is examined from the viewpoint of the suitability of highway geometric design, given the peculiar stability and control limitations of heavy-duty trucks. Accident records were used to identify specific ramps which were overinvolved in jackknife, rollover, and run-off-road accidents
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The problem of truck loss of control accidents on interchange ramps is examined from the viewpoint of the suitability of highway geometric design, given the peculiar stability and control limitations of heavy duty trucks. Accident records were used to identify specific ramps which were over involved in jackknife, rollover, and run off road accident
...
The problem of truck loss-of-control accidents on interchange ramps is examined from the viewpoint of the suitability of highway geometric design, given the peculiar stability and control limitations of heavy-duty trucks. Accident records were used to identify specific ramps which were over involved in jackknife, rollover, and run-off-road accident
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The purpose of the present research was to establish relationships between traffic conflicts and accidents, and co identify expected and abnormal conflict rates given various circumstances. The data upon which the conclusions and recommendations are based were collected during the summer of 1982 at 46 signalized and unsignalized intersections in th
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A summary off two reports resulting from a review of the applicability and usefulness of countermeasures used to stabilize eroding streambanks in the vicinity of roadways and at bridge crossings is given. The first report discusses erosion processes in channel bends and methods of controlling this erosion, identifies useful flow control and streamb
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A study of erosion processes in channel bends and methods of controlling channel bank erosion in bends is reported on. Flow and erosion processes in channel bends are categorized and discussed to aid in identifying the erosion mechanisms and processes active at a particular site. Knowledge of the active erosion processes is important to the selecti
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A study of the applicability and design of spur-type flow-control and streambank stabilization structures has been conducted to establish design guidelines and other criteria for the use of spurs. The recommendations and findings are based on a thorough review of pertinent literature, analysis of several hundred field sites, and on a recent laborat
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A formal request for the subject field demonstration was received from the Wyoming Highway Department (WHO) in October 1984. The purpose for the load test program was, (1) to demonstrate the use of newer and more accurate techniques to determine pile load capacity during driving, (2) to verify the predictions made by the newer techniques by perform
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The catalog of functions includes a description of a "Basic" computer-based traffic signal system, plus a listing and description of options which can be added. Standardization of the functional requirements of the Basic system, and of the functional requirements for additional features (options), will assist planners and users in the functional de
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In order to gain a better understanding of the behavior of piles in snad, an extensive search of the literature has been performed to collect data on instrumental piles driven in sand and tested under vertical loads. The load transfer characteristics of the piles were then analyzed without considering residual stresses. Wherever the data allowed it
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streambank stabilization structures has been conducted to establish designguidelines and other criteria for the use of spurs. The recommendations andfindings are based on a thorough review of pertinent literature, analysis ofseveral hundred field sites, and on a recent laboratory study conducted by theFederal Highway Administration. Recommendations
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United States. Federal Highway Administration. Office of Highway Planning
1985-06-01
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PDF
The following discussion provides a synopsis of the material covered in the following sections. In Section 2 of this Guide, the reader will find a discussion of the structure of traffic characteristics monitoring; how traffic counting, vehicle classification, and truck weighing relate to the overall monitoring effort; and how this effort is structu
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The FOIL: A New Outdoor Laboratory for Evaluating Roadside Safety Hardware; Chemical and Physical Characterization of Binder Materials; Residual Driving Stresses and Vertically Loaded Piles in Cohesionless Soils; Long Term Monitoring of Pile Foundations
MGA Research Corporation has conducted a limited study on three curb types that have been designed by the State Highway Departments of the States of Arizona and New Hampshire using the Highway-Vehicle-Object-Simulation Model (HVOSM). The purpose of this study was to evaluate what effect these curb designs would have on the guidelines governing the
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The purpose of this study was to develop a series of data sets on microscopic vehicular traffic flow for selected types of freeway bottleneck sections.
Field demonstrations for Demonstration Project 66, "Design and Construction of Driven Pile Foundations," include (1) dynamic pile monitoring by pile analyzer (field computer), and (2) static pile load testing using a mobile pile load test frame. The equipment and technical assistance are made available to a requesting State highway department. A re
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Field demonstrations for Demonstration Project 66, "Design and Construction of Driven Pile Foundations," include (1) dynamic pile monitoring by pile analyzer (field computer), and (2) static pile load testing using a mobile pile load testing frame. The equipment and technical assistance are made available to requesting State highway departments and
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