Minimum Highway Sign Luminance Requirements for Older Drivers PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Minimum Highway Sign Luminance Requirements for Older Drivers PDF full book. Access full book title Minimum Highway Sign Luminance Requirements for Older Drivers by . Download full books in PDF and EPUB format.
Author:
Publisher:
ISBN:
Category : Automobile driving at night
Languages : en
Pages : 120
Get Book Here
Book Description
In this research, the minimum amount of luminance required by older and younger drivers to identify a numerical legend on yellow warning signs at night was investigated. A field study was conducted for subjective and objective evaluation of seven yellow warning signs on a simulated two-way rural highway. The signs were prepared to have different retroreflectivity values thus providing different luminance values to the subjects.
Author:
Publisher:
ISBN:
Category : Automobile driving at night
Languages : en
Pages : 120
Get Book Here
Book Description
In this research, the minimum amount of luminance required by older and younger drivers to identify a numerical legend on yellow warning signs at night was investigated. A field study was conducted for subjective and objective evaluation of seven yellow warning signs on a simulated two-way rural highway. The signs were prepared to have different retroreflectivity values thus providing different luminance values to the subjects.
Author: Johnny R. Graham
Publisher:
ISBN:
Category : Older automobile drivers
Languages : en
Pages : 22
Get Book Here
Book Description
Author: Anwar Fazal
Publisher:
ISBN:
Category : Automobile driving at night
Languages : en
Pages : 202
Get Book Here
Book Description
Author:
Publisher: Transportation Research Board
ISBN: 0309077451
Category : Aged automobile drivers
Languages : en
Pages : 339
Get Book Here
Book Description
Author: L. K. Staplin
Publisher:
ISBN:
Category : Older automobile drivers
Languages : en
Pages : 396
Get Book Here
Book Description
Author: Kent L. Black
Publisher: Transportation Research Board
ISBN: 9780309048699
Category : Transportation
Languages : en
Pages : 60
Get Book Here
Book Description
Author: Douglas J. Mace
Publisher:
ISBN:
Category : Accidents
Languages : en
Pages :
Get Book Here
Book Description
Although roadway lighting has been found to reduce the nighttime accident rate, previous studies have had difficulty developing a relationship between any description of the lighting provided and the extent of accident reduction. While it should be possible to design fixed lighting systems so that any increased investment in the system will always result in an improved night/day accident ratio, research has indicated that higher levels of illumination do not always accomplish this. The response of the lighting community has evolved from recommendations based on minimum levels of light (illuminance), to the development of guidelines intended to improve visibility and mitigate the effects of glare. The research reported here attempted to investigate a number of issues concerning the relationships of fixed lighting parameters to visibility and driver comfort. Nine fixed lighting designs were used to explore the interactive effects of luminance and luminance uniformity with respect to minimizing the negative effects of glare and maximizing the visibility of objects within fixed lighting area. While the study did not provide definitive results as to how to design a lighting system that will reduce the night/day accident ratio, the results do suggest a possible explanation of why a relationship between accidents and lighting design has not been found. The results indicated that medium levels of illumination provided comparable visibility to higher levels, when the former were accompanied by non-uniform luminance. Therefore more costly designs are not necessarily better. Also, some lighting designs provide less visibility than no lighting at all, a result that can be explained by the interactive effects of headlights. Further research is needed to address the issue of whether the visibility task used in this research is a proper criterion for lighting design. To this end, the issue is not whether the highway is littered with objects similar to the reference visibility target used in this study, but whether a lighting system designed to optimize the visibility of this target will improve the visibility of everything else, including pedestrians, lane lines, etc. Or does optimizing the visibility of the reference target, reduce the visibility of more critical targets.
Author: John L. Campbell
Publisher: Transportation Research Board
ISBN: 0309154693
Category : Technology & Engineering
Languages : en
Pages : 111
Get Book Here
Book Description
NCHRP report 600 explores human factors principles and findings for consideration by highway designers and traffic engineers. The report is designed to help the nonexpert in human factors to consider more effectively the roadway user's capabilities and limitations in the design and operation of highway facilities.
Author:
Publisher:
ISBN:
Category : Highway research
Languages : en
Pages : 56
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Air travel
Languages : en
Pages : 656
Get Book Here
Book Description
