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232 AADT average annual daily traffic ADAS advanced driver assistance systems ADT average daily traffic ANOVA analysis of variance ATLM audio-tactile lane markings AV autonomous vehicles CCD charge-coupled device cd/fc candelas per foot-candle cd/lx candelas per lux CMF crash modification factors CRF crash reduction factors DAS data acquisition system DC Washington, DC DOTD Department of Transportation and Development DVRPC Delaware Valley Regional Planning Commission FM farm to market GLM generalized linear models GPS global positioning system HMA hot mix asphalt HPMS highway performance monitoring system IR infrared LED light-emitting diode LME linear mixed effect MAD mean absolute deviation mcd/lux millicandela per lux MUTCD Manual on Uniform Traffic Control Devices mW milliwatts NDS naturalistic driving study OLS ordinary least squares PC point of curvature PMD post-mounted delineators PR Puerto Rico PT point of tangent R minimum curve radius RI coefficient of luminous intensity RID roadway information database RL coefficient of retroreflected luminance ROR run-off-road List of Abbreviations
List of Abbreviations 233Â Â RPMs retroreflective pavement markers RS rumble strip RSA road safety audit RVP relative visual performance SHRP 2 Second Strategic Highway Research Program SI specific intensity sr steradian SRPM snowplowable retroreflective pavement marker TCD traffic control device TOD time of day TTI Texas A&M Transportation Institute VL visibility level VTTI Virginia Tech Transportation Institute
