An Alternative to Post-mounted Delineators at Horizontal Curves on Two-lane Highways
Author :
Publisher :
Page : 122 pages
File Size : 16,88 MB
Release : 1990
Category : Reflectors (Safety devices)
ISBN :
Author :
Publisher :
Page : 122 pages
File Size : 16,88 MB
Release : 1990
Category : Reflectors (Safety devices)
ISBN :
Author :
Publisher :
Page : 524 pages
File Size : 38,7 MB
Release : 2007
Category : Highway research
ISBN :
Author : R. W. Lyles
Publisher : Transportation Research Board National Research
Page : 52 pages
File Size : 48,21 MB
Release : 2006
Category : Technology & Engineering
ISBN :
Author :
Publisher :
Page : 104 pages
File Size : 20,46 MB
Release : 2004
Category : Automobiles
ISBN :
Author :
Publisher :
Page : 560 pages
File Size : 39,84 MB
Release : 1992
Category : Air travel
ISBN :
Author : Helmut T. Zwahlen
Publisher :
Page : 112 pages
File Size : 27,70 MB
Release : 1993
Category : Curves in engineering
ISBN :
A survey of the current delineation practices in the various U.S. States and Canadian provinces indicated the importance of a set of quantitative delineation guidelines. According to the survey, no computer assisted methods are used for the curve delineation task. The evaluator responses before and after curve delineation, with the objective to obtain input for the curve delineation tasks, indicate that (1) evaluators have difficulties to agree on the type, number, and location of curve delineation devices, just by looking at a curve while driving with low beams at night; 2) subjective evaluation of an undelineated curve tends to provide a recommended number of devices that is considerably lower than the actual number required when placing four devices within a driver's functional visual field of view; 3) the optimal type, number, and location of the delineation devices should be computed with a set of algorithms implemented in a software package. These findings support the development and use of a knowledge-based, interactive software which computes the delineation layout. The approach and center speed measurements before and after delineation installation were conducted in order to assure that there are no adverse effects on driver behavior due to delineation. The measurements indicate that there is no systematic pattern in speed increase or speed reduction before and after the delineation devices are installed.
Author : Kay Fitzpatrick
Publisher :
Page : 188 pages
File Size : 21,7 MB
Release : 2002
Category : Low-volume roads
ISBN :
Author : Institute of Transportation Engineers
Publisher :
Page : 278 pages
File Size : 45,22 MB
Release : 1993
Category : Roads
ISBN :
Author : National Committee on Uniform Traffic Laws and Ordinances
Publisher :
Page : 162 pages
File Size : 17,2 MB
Release : 1987
Category : Automobiles
ISBN :
Author : Timothy R. Neuman
Publisher : Transportation Research Board
Page : 94 pages
File Size : 12,61 MB
Release : 2008
Category : Head-on collisions
ISBN : 0309099366
Also available online via the Web pages of the TRB Cooperative Research Programs (www4.trb.org/trb/crp.nsf).