Drivers＇　misjudgment　is　a　significant　issue　for　the　curve　safety.　It　is　considered　as　a　more　influential　factor　than　other　traffic　environmental　conditions　for　inducing　risk.　The　research　suggested　that　the　cognition　theory　could　explain　the　process　of　drivers＇　behavior　at　curves.　In　this　simulator　experiment,　a　principle　cognition　model　was　built　to　examine　the　rationality　of　this　explanation.　The　core　of　this　pilot　study　was　using　one　of　the　driving　decision　strategies　for　braking　at　curves　to　verify　the　accuracy　of　the　cognition　model　fundamentally.　Therefore,　the　experiment　designed　three　treatments　of　information　providing　modes.　The　result　of　the　experiment　presented　that　the　warning　information　about　curves　in　advance　can　move　the　position　of　first　braking　away　from　curves.　This　phenomenon　is　consistent　with　the　model＇s　inference.　Thus,　the　conclusion　of　this　study　indicates　that　the　process　of　the　drivers＇　behavior　at　curves　can　be　explained　by　the　cognition　theory　and　represented　by　cognition　model.　In　addition,　the　model＇s　characteristics　and　working　parameters　can　be　acquired　by　doing　other　research.　Then　based　on　the　model　it　can　afford　the　advice　for　giving　the　appropriate　warning　information　that　may　avoid　the　driver＇s　mistake.