The Applicability of High Intensity Sheeting on Overhead Highway Signs PDF Download
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Author: R. N. Robertson
Publisher:
ISBN:
Category : Lettering
Languages : en
Pages : 30
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Book Description
This report summarizes (1) the findings of a research study on the applicability of using high intensity reflective sheeting on overhead signs, and (2) the implementation of recommendations evolving from these findings through elimination of the illumination on many overhead signs in Virginia. A survey was conducted to determine the percentage of overhead signs meeting the criteria, developed in the research, under which the illumination could be eliminated if they were refurbished with high intensity sheeting, and the plans of several proposed projects were reviewed to obtain an estimate of the percentage of signs on which lighting could be eliminated through the use of the high intensity material. Also, data were collected relative to the installation, energy and maintenance costs for lighting overhead signs. The study concluded that the illumination could be eliminated on approximately 45% of the existing signs and 50% of the proposed signs through the use of high intensity reflective materials. The benefits anticipated from the implementation of the program include enormous money and energy savings, a significant reduction in the exposure of maintenance personnel to hazardous working conditions, and improved services to the motorists.
Author: R. N. Robertson
Publisher:
ISBN:
Category : Lettering
Languages : en
Pages : 30
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Book Description
This report summarizes (1) the findings of a research study on the applicability of using high intensity reflective sheeting on overhead signs, and (2) the implementation of recommendations evolving from these findings through elimination of the illumination on many overhead signs in Virginia. A survey was conducted to determine the percentage of overhead signs meeting the criteria, developed in the research, under which the illumination could be eliminated if they were refurbished with high intensity sheeting, and the plans of several proposed projects were reviewed to obtain an estimate of the percentage of signs on which lighting could be eliminated through the use of the high intensity material. Also, data were collected relative to the installation, energy and maintenance costs for lighting overhead signs. The study concluded that the illumination could be eliminated on approximately 45% of the existing signs and 50% of the proposed signs through the use of high intensity reflective materials. The benefits anticipated from the implementation of the program include enormous money and energy savings, a significant reduction in the exposure of maintenance personnel to hazardous working conditions, and improved services to the motorists.
Author:
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 140
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Book Description
Author: H. Dexter Jones
Publisher:
ISBN:
Category : Traffic signs and signals
Languages : en
Pages : 132
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Book Description
Verhead Guide Signs can be illuminated to sufficient target value and uniformity with certain 100 watt mercury vapor lighting units. Coating materials based on thermal setting polyester, and thermal setting polyvinylidene fluoride have been found to be satisfactory coating materials for Overhead Guide Signs. Preliminary field evaluations and legibility studies indicate that approximately 40% of the Overhead Guide Signs in the State would not require illumination if the legend is reflective.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 220
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Book Description
Author: United States. National Highway Traffic Safety Administration
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 884
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Book Description
Author:
Publisher:
ISBN:
Category : Highway research
Languages : en
Pages : 640
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Book Description
Author: H. Dexter Jones
Publisher:
ISBN:
Category : Traffic signs and signals
Languages : en
Pages : 202
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Book Description
Author: Jonathan Everett Upchurch
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 108
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Book Description
The study objective was to identify a lighting system which has a lower power cost and reduced maintenance requirements and which provides adequately for motorists' needs in terms of legibility and illumination level. Twenty-five candidate lighting systems were identified through a review of technical data and specifications for lamps and fixtures by an independent lighting expert. Photometric tests and computer analyses of sign illumination levels reduced the number of candidates to ten alternative systems which were then field tested. Each alternative lighting system was tested for 10 to 14 months. Sign luminance was measured with a telephotometer. Power consumption was monitored. Maintenance requirements and lamp life were noted. A human factors study determined legibility distance and rated viewing comfort, lighting uniformity, and color rendition. An economic analysis was performed which considered the initial cost of acquiring and installing the lighting systems and annual costs for electric power, washing, relamping, and ballast replacement. A lighting system using the high pressure sodium light source was recommended. Compared to the existing commonly used fluorescent system, it uses one-third as much electric power and has about one-third of the annual owning and operating cost. The recommended system has a satisfactory illumination level and provides the best legibility distance of the ten systems tested.
Author: United States. National Highway Traffic Safety Administration
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 224
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Book Description
Author:
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 230
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Book Description
Report on the activities of the National Highway Traffic Safety Administration and the Federal Highway Administration under the Highway Safety Act of 1966.
