Traffic Surveillance and Means of Communicating with Drivers

Traffic Surveillance and Means of Communicating with Drivers
Author: Cornell Aeronautical Laboratory
Publisher:
Total Pages: 44
Release: 1964
Genre: Traffic engineering
ISBN:
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The operational characteristics of freeways were studied to determine a method of communicating traffic surveillance information to the drivers. The recommended spacing of detection devices to measure speed, volume and/or occupancy data was developed to collect the required information for determining impending traffic congestion. Design criteria for a ramp access advisory signal was established and tested. The operation of an airborne observer in traffic control was also investigated. A general description of air surveillance operations and its equipment and cost are included.

Highway Research News

Highway Research News
Author:
Publisher:
Total Pages: 598
Release: 1963
Genre: Highway research
ISBN:
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Issues for 1963- include section: Urban transportation research digest.

Protective Coatings for Highway Structural Steel

Protective Coatings for Highway Structural Steel
Author: John D. Keane
Publisher:
Total Pages: 80
Release: 1969
Genre: Technology & Engineering
ISBN:
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A current state-of-the-art survey is presented with regard to painting of highway structural steel. A thorough literature review was conducted and an inspection and evaluation made of more than 4,000 paint exposure tests. Paint film thickness measurement studies were made. Specific recommendations are given for selecting typical paint systems on the basis of six environmental zones, which represent the range of severity of environment in which highway steel structures are located in the United States. Model specifications are suggested for surface preparation, application, material procurement, and paint system.

Evaluation of Studded Tires

Evaluation of Studded Tires
Author:
Publisher:
Total Pages: 84
Release: 1969
Genre: Transportation
ISBN:
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The current state of knowledge with both studded tire performance and methods of assessing pavement wear is reported. An annotated bibliography is presented of all known research on this subject from the U.S. and European sources, a review and evaluation of the data and results of completed studies and recommendations for future research. The objectives of the study were confined to the following tests: (1) correlation of data on the frictional characteristics of studded tires on ice, packed snow, and on bare pavements, and (2) development of a method, or methods, of quantitative assessment of the difference in wearing and abrasive effects of studded versus unstudded tires on different types of surfaces. A stud-resistance coefficient for operation on ice was derived and all U.S. data are correlated with this parameter and ice temperature.

Economics of Design Standards for Low-volume Rural Roads

Economics of Design Standards for Low-volume Rural Roads
Author: Clarkson Hill Oglesby
Publisher:
Total Pages: 112
Release: 1969
Genre: Technology & Engineering
ISBN:
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he objective of this study is to examine prevailing rural design standards to determine their economic justification. This would evaluate in depth the cost of some of the most significant design practices (for example, roadway and shoulder width and surfacing type). Resulting user benefits, such as operating, accident and time savings would be weighed against the cost of individual features. In addition to the analysis of the user-benefit relationships, the economic and social consequences to local residents, businesses and communities should be studied and a suitable means of including them in the reckoning of warranted levels of improvement should be found.