01362oam 2200409Ia 450 991070021260332120110512092612.0(CKB)5470000002408855(OCoLC)722808638(EXLCZ)99547000000240885520110512d2009 ua 0engurcn|||||||||txtrdacontentcrdamediacrrdacarrierLED raised pavement markers[electronic resource][Washington, D.C.] :U.S. Dept. of Transportation, Federal Highway Administration,[2009]1 online resource (2 unnumbered pages) color illustrationsTitle from title screen (viewed May 11, 2011)."May 2009.""FHWA-SA-09-007."Light emitting diode raised pavement markersLight emitting diodesRoad markingsRoadsInterchanges and intersectionsSafety measuresLight emitting diodes.Road markings.RoadsInterchanges and intersectionsSafety measures.United States.Federal Highway Administration.GPOGPOGPOBOOK9910700212603321LED raised pavement markers3153089UNINA