Freeway　sections　with　closely　spaced　exits　are　one　of　the　most　critical　and　challenging　aspects　of　freeways,　but　limited　studies　have　investigated　the　factors　affecting　driving　behavior　in　these　sections.　This　study　investigated　the　influence　of　the　traffic　signs’　effectiveness　on　driving　behavior　on　such　special　sections,　using　a　driving　simulator.　Considering　that　two　types　of　independent　variables　(ramp　spacing　and　combined　sign　scheme)　have　main　and　interactive　effects　on　driving　behavior,　a　total　of　eight　experimental　schemes　were　designed,　and　32　drivers　were　recruited　to　participate　in　the　experiments.　Twelve　driving　behavior　variables　were　used　to　study　the　significance　and　influence　degree　of　each　index　on　driving　behavior　through　repeated-measures　ANOVA.　The　results　indicate　that　a　reasonable　design　of　guide　signs　is　beneficial　to　traffic　safety　in　freeway　at　closely　dense　exits,　providing　a　theoretical　basis　for　safe　freeway　design.　©　ASCE.