This report discusses the results of a study to determine the data needs necessary to address truck safety issues and to develop a data collection and analysis plan. Priority truck safety issues that are amenable to truck accident data analyses were identified through survey techniques. These issues led to development of a list of data elements for
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This technology sharing report summarizes a comprehensive program of research on the tolerable movement of highway bridges that was begun in 1978 and completed in 1983. This investigation included (a) a state-of-the-art assessment of tolerable bridge movements based on a literature review, an appraisal of existing design specifications and practice
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Hydraulic laboratory experiments were conducted to determine the effectiveness of surplus concrete traffic barriers when used as riprap to protect against scour and erosion. Even though the traffic barriers have a poor shape for riprap, engineers are interested in knowing what size rock riprap would be approximately equivalent to the traffic barrie
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Pertinent chemical and physical properties of calcium magnesium acetate (CMA) were determined. Included were comparisons of ratios of calcium to magnesium varying from 100% CaAc2 to 100% MgAc2. The objective was to determine the optimum composition of CMA for road deicing. In a 12-month study involving wetting/drying tests with 11 ratios of Ca/Mg a
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United States. Federal Highway Administration. Office of Highway Safety
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1986-01-01
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PDF
The report contains an extension of a series of statistical data published annually since 1967 by the Federal Highway Administration (FHWA) as Fatal and Injury Accident Rates on Federal-Aid and Other Highway Systems. The series has been a cooperative effort of the FHWA's Offices of Traffic Operations, Highway Safety, and Highway Planning, The State
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This research was performed to study the safety and operational characteristics of two-lane rural highway curves. A series of interdependent research methodologies was employed, including (1) multivariate accident analyses; (2) simulation of vehicle/driver operations using HVOSM: (3) field studies of vehicle behavior on highway curves; and (4) anal
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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 test frame. The equipment and technical assistance are made available to a requesting State highway department. A re
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Technology Transfer: Activities, Issues, and Opportunities; Polymer Concrete Used in Redecking a Major Bridge; The Optical and Energy Efficiency of Traffic Signals; Two-Lane Traffic Simulation—A Field Evaluation of Roadsim
The purpose of this study was to determine the safety, economic, operational, and environmental consequences of requiring certain types of vehicles to stop at railroad crossings with active warning devices when the devices are not activated. The study included an assessment of the positive and negative impacts on train and nontrain-involved acciden
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Many two-lane highways in rural areas experience operational problems related to high traffic volumes; lack of adequate passing opportunities; slow-moving vehicles on grades and in rolling terrain; roadside development that generates turning maneuvers at driveways; and turning movements at intersections. This report evaluates five operational aids
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John A. Volpe National Transportation Systems Center (U.S.)
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1985-11-01
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Nationwide Personal Transportation Survey (NPTS)
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PDF
This report is part of a series that presents findings from the 1983-1984 Nationwide Personal Transportation Study (NPTS) . This report contains tabulations which relate 1983-1984 travel to various demographic characteristics.
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