This　paper　focuses　on　the　effect　of　highway　curves　on　driver　gazing　behavior　in　a　driving　simulator.　In　this　study,　eye　gazing　data　were　collected　using　an　eye　tracker,　and　gazing　parameters　were　analyzed　to　locate　the　divisions　between　driver　gazing　regions.　The　results　of　the　experiment　showed　that　drivers　focused　on　the　middle　region　during　the　driving　process.　Moreover,　when　the　vehicle　was　passing　through　a　curved　road,　the　proportion　of　attention　focusing　on　the　middle　region　increased.　The　result　indicated　that　highway　curves　obviously　affected　the　proportion　of　drivers　focusing　on　the　middle　region.　As　the　radius　of　the　curve　increased,　drivers＇　gazing　points　would　move　from　the　two　sides　of　the　road　to　the　middle　region.　The　results　from　this　research　may　be　used　to　reveal　drivers＇　gazing　behavior,　provide　insight　for　visibility　research　of　road　signs　and　markings,　and　improve　the　design　of　traffic　safety　facilities.　©　2011　ASCE.