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Publication Number: FHWA-HRT-04-139
Date: December 2005

Enhanced Night Visibility Series, Volume VIII: Phase II—Study 6: Detection of Pavement Markings During Nighttime Driving in Clear Weather

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LIST OF ACRONYMS AND ABBREVIATIONS


General Terms

C contrast
DMI distance measuring instrument
ENV Enhanced Night Visibility
FHWA Federal Highway Administration
GPS Global Positioning System
ITS Intelligent Transportation Systems
LB pavement luminance
LT marking luminance
SUV sport utility vehicle
VDOT Virginia Department of Transportation
VTRC Virginia Transportation Research Council
UV ultraviolet
UV–A ultraviolet A (wavelength 315 to 400 nanometers)

Vision Enhancement Systems

HLB halogen (i.e., tungsten-halogen) low beam
hybrid UV–A + HLB hybrid UV–A/visible output together with halogen low beam
three UV–A + HLB three UV–A headlamps together with halogen low beam
five UV–A + HLB five UV–A headlamps together with halogen low beam
HLB–LP halogen low beam at a lower profile
HHB halogen high beam
HOH high output halogen
HID high intensity discharge
hybrid UV–A + HID hybrid UV–A/visible output together with high intensity discharge
three UV–A + HID three UV–A headlamps together with high intensity discharge
five UV–A + HID five UV–A headlamps together with high intensity discharge

Statistical Terms

ANOVA analysis of variance
DF degrees of freedom
F value F-ratio
GLM general linear model
MS mean square
P value statistical significance
SE standard error
SNK Student-Neuman-Keuls
SS sums of squares

Measurements

cm centimeters
ft feet
gal gallons
h hours
kg/L kilograms per liter
km/h kilometers per hour
lb pounds
m meters
mi/h miles per hour
mm millimeters
s seconds

 

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