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Showing 14561 - 14580 of 15888 results
  • Determination of Impact from Vibrations Related to Highway Use
    Determination of Impact from Vibrations Related to Highway Use
    Rudder, F.F.
    1978-06-01 | PDF
    This report describes the results of a study to determine the environmental impact from traffic-induced ground vibration. The study encompassed psychological, legal, and engineering efforts to define the nature and extent of the problem. At the beginning of the study, there was no published literature directly related to describing either the engin ...
  • Public Roads A Journal of Highway Research and Development Vol 42 No 1
    Public Roads: A Journal of Highway Research and Development, Vol. 42 No. 1
    Woo, Dah-Cheng ;
    Sundberg, Donald
    1978-06-01 | Public Roads | PDF
    Bicycle-Safe Grate Inlets; Map Displays for Traffic Systems; Electroslag Weldments: Performance and Needed Research; Analyzing Intersection Performance with NETSIM
    Supporting Files
  • Traffic Volume Trends June 1978
    Traffic Volume Trends: June 1978
    United States. Federal Highway Administration
    1978-06-01 | PDF
    Traffic statistics for June 1978.
  • Integrated Motorist Information System IMIS Feasibility and Design Study Phase II Generalized Methodology for IMIS Feasibility Studies Volume 1 IMIS Feasibility Study Handbook
    Integrated Motorist Information System (IMIS) Feasibility and Design Study: Phase II: Generalized Methodology for IMIS Feasibility Studies: Volume 1 - IMIS Feasibility Study Handbook
    Zove, P. ;
    Berger, C.
    1978-05-01 | PDF
    Phase I of the IMIS project examined the feasibility of implementing an Integrated Motorist Information System in a corridor located in New York (northern Long Island). The results are documented in report numbers FHWA-RD-77-47, 48 and 49. Under Phase II of IMIS (the present phase), the methodology for performing an IMIS feasibility study was gener ...
  • Integrated Motorist Information System IMIS Feasibility and Design Study Phase II Generalized Methodology for IMIS Feasibility Studies Volume 2 Validation and Application of Feasibility Study Handbook
    Integrated Motorist Information System (IMIS) Feasibility and Design Study: Phase II: Generalized Methodology for IMIS Feasibility Studies: Volume 2 - Validation and Application of Feasibility Study Handbook
    Zove, P. ;
    Berger, C.
    1978-05-01 | PDF
    Phase I of the IMIS project examined the feasibility of implementing an Integrated Motorist Information System in a corridor located in New York (northern Long Island). The results are documented in report numbers FHWA-RD-77-47, 48, and 49 Under Phase II of IMIS (the present phase) the methodology for performing an IMIS feasibility study was genera ...
  • Maine Facility Research Summary Dynamic Sign Systems for Narrow Bridges
    Maine Facility Research Summary : Dynamic Sign Systems for Narrow Bridges
    Koziol, Joseph S., Jr.
    1978-05-01 | PDF
    An overview of the Maine Facility - a two lane rural highway test site - is presented and an experiment conducted at the facility between August and December 1976 is summarized. The experiment was designed to test and evaluate the application of dynamic (activated) sign systems in alerting motorists to the presence of narrow bridges on two-lane rur ...
  • Seven Experiment Designs Addressing Problems of Safety and Capacity on TwoLane Rural Highways Volume 7 Experimental Design to Develop and Evaluate Measures for Reducing the Effects of Roadside Friction on Traffic Flow
    Seven Experiment Designs Addressing Problems of Safety and Capacity on Two-Lane Rural Highways : Volume 7. Experimental Design to Develop and Evaluate Measures for Reducing the Effects of Roadside Friction on Traffic Flow
    King, G. F. ;
    Abramson, P.
    1978-05-01 | PDF
    The objective of the experiment is to develop and evaluate the relative merit of warning signs and other devices, used singly or in combination, in improving traffic flow and safety in the presence of a variety of different types of roadside friction elements. The following types of friction elements are considered: vehicles entering the main roadw ...
  • Seven Experiment Designs Addressing Problems of Safety and Capacity on TwoLane Rural Highways Volume 4 Experimental Design to Develop and Evaluate Remedial Aids to Urban Drivers of Slow Moving Vehicles on a Grade
    Seven Experiment Designs Addressing Problems of Safety and Capacity on Two-Lane Rural Highways : Volume 4. Experimental Design to Develop and Evaluate Remedial Aids to Urban Drivers of Slow Moving Vehicles on a Grade
    King, G. F. ;
    Abramson, P.
    1978-05-01 | PDF
    Accidents between vehicles traveling in the same direction represent a large proportion of all traffic accidents. Past studies have shown that as the speed differential between two vehicles traveling in the same direction increases, the accident rate soars. This speed differential is commonly found with a large vehicle ascending a grade being overt ...
  • Seven Experiment Designs Addressing Problems of Safety and Capacity on TwoLane Rural Highways Volume 2 Experimental Design to Develop and Evaluate Dynamic Aids for Narrow Bridges
    Seven Experiment Designs Addressing Problems of Safety and Capacity on Two-Lane Rural Highways : Volume 2. Experimental Design to Develop and Evaluate Dynamic Aids for Narrow Bridges
    King, G. F. ;
    Abramson, P.
    1978-05-01 | PDF
    A large number of bridges on two-lane rural highways are narrow bridges. While there is no universally accepted definition of this type of bridge, it is generally considered to be one where the roadway and/or shoulders narrow significantly. It has been recognized that this situation produces accidents with either the bridge structure, oncoming vehi ...
  • Seven Experiment Designs Addressing Problems of Safety and Capacity on TwoLane Rural Highways Volume 5 Experimental Design for Vehicle Equivalency and Capacity Including Effects of Commercial and Recreational Vehicles on Rural NonControlled Access
    Seven Experiment Designs Addressing Problems of Safety and Capacity on Two-Lane Rural Highways : Volume 5. Experimental Design for Vehicle Equivalency and Capacity Including Effects of Commercial and Recreational Vehicles on Rural Non-Controlled Access
    King, G. F. ;
    Abramson, P.
    1978-05-01 | PDF
    The objective of the experiment is to establish the influence of various types of trucks, buses and recreational vehicles on traffic flow on rural non-controlled access highways. This influence is due primarily to the low speeds which are common for these types of vehicles, particularly when negotiating grades.
  • Seven Experiment Designs Addressing Problems of Safety and Capacity on TwoLane Rural Highways Volume 6 Experimental Design for Comparative Evaluation of WarningAdvisory and Regulatory Traffic Control Devices
    Seven Experiment Designs Addressing Problems of Safety and Capacity on Two-Lane Rural Highways : Volume 6. Experimental Design for Comparative Evaluation of Warning-Advisory and Regulatory Traffic Control Devices
    King, G. F. ;
    Abramson, P.
    1978-05-01 | PDF
    The overuse of regulatory type signing on highways has been found to cause motorists to ignore all signing. In this experimental design, advisory-warning signs, regulatory signs and a combination of the two types will be tested in four experiments. The first experiment will compare curve signing; the second, intersection signing; the third, no pass ...
  • Seven Experiment Designs Addressing Problems of Safety and Capacity on TwoLane Rural Highways Volume 8 Experimental Design and Evaluate Remedial Aids for Intersections with Inadequate Sight Distance
    Seven Experiment Designs Addressing Problems of Safety and Capacity on Two-Lane Rural Highways : Volume 8. Experimental Design and Evaluate Remedial Aids for Intersections with Inadequate Sight Distance
    King, G. F. ;
    Abramson, P.
    1978-05-01 | PDF
    The experiment is planned for low-volume rural intersections on or near the Maine Facility. A number of remedial aids, both active and dynamic, are tested. The devices are designed either to focus the motorist's attention on existing conditions or to display information about a possible conflict at the intersection.
  • Seven Experiment Designs Addressing Problems of Safety and Capacity on TwoLane Rural Highways Volume 3 Experimental Design to Evaluate MUTCD and Other Traffic Controls for Highway Construction and Maintenance Operations on TwoLane Highways
    Seven Experiment Designs Addressing Problems of Safety and Capacity on Two-Lane Rural Highways : Volume 3. Experimental Design to Evaluate MUTCD and Other Traffic Controls for Highway Construction and Maintenance Operations on Two-Lane Highways
    King, G. F. ;
    Abramson, P.
    1978-05-01 | PDF
    The report contains an experimental design to evaluate methods of providing safe and expeditious movement of traffic through or around construction and maintenance zones while providing safety for workers in these zones. Two types of construction/maintenance zones will be examined with different traffic control devices. A simulation model for singl ...
  • BicycleSafe Grate Inlets Study Volume 2 Hydraulic Characteristics of Three Selected Grate Inlets on Continuous Grades
    Bicycle-Safe Grate Inlets Study Volume 2 - Hydraulic Characteristics of Three Selected Grate Inlets on Continuous Grades
    Burgi, P. H.
    1978-05-01 | PDF
    Additional hydraulic tests were conducted on three grate inlet designs identified as bicycle safe, hydraulically efficient and having good debris handling characteristics. The grates were selected based on the results of a previous study--Bicycle-safe Grate Inlets Study--Volume I, Hydraulic and Safety Characteristics of Selected Grate Inlets on Con ...
  • Traffic Volume Trends May 1978
    Traffic Volume Trends: May 1978
    United States. Federal Highway Administration
    1978-05-01 | PDF
    No Description
  • Styrenebutadiene latex modifiers for bridge deck overlay concrete
    Styrene-butadiene latex modifiers for bridge deck overlay concrete.
    Clear, Kenneth C. ;
    Chollar, Brian H.
    1978-04-01 | PDF
    Styrene-butadiene (S/B) latex modified concrete overlays are being used to protectnew bridge decks from rapid deicer-borne chloride intrusion and also in bridgedeck rehabilitation efforts. The purposes of this research were to evaluate severalcommercially-available S/B latex modifiers for bridge deck overlay concrete; and todevelop chemical specifi ...
  • Production Efficiency Study on RubberTired Scrapers
    Production Efficiency Study on Rubber-Tired Scrapers
    Clemmens, J.P. ;
    Dillman, R.J.
    1978-04-01 | PDF
    Forty-three rubber-tired scrapers of various types and sizes were studied on eleven separate highway construction projects throughout the United States. These field studies were conducted in order to determine the productive capabilities of the machines under various conditions. Supplementary pusher studies were also conducted to aid in evaluating ...
  • Evaluation of Selected Softening Agents Used in Flexible Pavement Recycling
    Evaluation of Selected Softening Agents Used in Flexible Pavement Recycling
    Anderson, Douglas I. ;
    Peterson, Dale E.
    1978-04-01 | PDF
    Twenty-three softening agents were tested for physical and chemical properties. The agents were very low in viscosity, which seemed to correspond to a low asphaltenes two pavements being considered for recycling. Approximately 1 percent of the Dutrex and Dust Oil additives were needed to reduce the extracted asphalts to the AC5 level. About 1 1/2 p ...
  • Repair of Continuously Reinforced Concrete Pavement Combined State Studies of Selected Maintenance Activities A Cooperative Analysis by Teams From Arkansas Louisiana Mississippi Texas
    Repair of Continuously Reinforced Concrete Pavement: Combined State Studies of Selected Maintenance Activities – A Cooperative Analysis by Teams From Arkansas, Louisiana, Mississippi, Texas
    George, Calvin ;
    Owen, Russell
    1978-04-01 | PDF
    This report details the results of an in-depth study of methods and costs of repairing failures in continuously reinforced concrete pavement. The study was conducted in 1977 by teams of Engineers from four States: Arkansas, Louisiana, Mississippi, and Texas. Similarities were revealed in the methods of repair used by maintenance personnel in the fo ...
  • CostEffectiveness and Safety of Alternative Roadway Delineation Treatments for Rural TwoLane Highways Vol IV Appendix B Development and Description of Computerized Data Base
    Cost-Effectiveness and Safety of Alternative Roadway Delineation Treatments for Rural Two-Lane Highways. Vol. IV Appendix B, Development and Description of Computerized Data Base
    Bali, S. ;
    Potts, R.
    1978-04-01 | PDF
    Under this research study, the effect of various delineation treatments on accident rates was assessed by analyzing accident data from more than 500 roadway sites in 10 States for tangent, winding and isolated horizontal curve sections on two-lane rural highways. Cost-benefit and cost models for evaluating specific delineation treatments were devel ...
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