Crossword clues for Road sign no. 3 letters:ESSCurvy road signWAYWrong ___ (road sign)GASRoad signSLOCautioning road signNOU-- -TURN (road sign)GASWelcome road sign, oftenPED__ XING (road sign)PED___ XING (road sign words)ROOCreature on an Aussie road signESSRoad-sign figureSTEAbbr. on many Québec road signsDIPRoad sign warningINNRoad signGASWelcome road signSLORoad signSLORoad sign cautionSLOWord on road signsDIPRoad signGASInterstate road sign headerSLOTerse road signSLOTruncated road sign.BUSRoad sign, with 10 DownPED___ Xing (road sign)RTERoad sign no.SLOCautionary road signKPHAustralian road sign abbr.RTENo. on a road signNOU_____ TURN (road sign)TEERoad sign symbolSLOShortening apparently found on road signs and pavement, though I've never run across it anywhereSLORoad sign behestMPHRoad sign abbr.NOU__-turn: road signKPHCanadian road sign lettersESSCertain road sign shapeSLORoad-sign wordSLORoad sign commandJCTRoad-sign abbr.RTERoad sign: abbr.JCTRural road-sign abbr.SLORoad sign warningSLORoad sign, for short.SLOShortened road sign.SLOCurtailed road sign.NOU___ TURN (road sign)ESSFigure on some road warning signsESSRoad warning sign featureSLORoad warning signSLORoad caution signDIPSign on a country road