Taking　the　chevron　sign　alignment　in　freeway　ramp　as　the　object,　we　conducted　comparative　tests　in　a　driving　simulation　environment　on　the　spacing　of　chevron　alignment　sign.　Simulation　scenarios　of　three　different　spacings　(10　m,　15　m,　20　m)　of　freeway　chevron　alignment　signs　was　established　by　modeling　software　Multigen　Creator,　etc.　60　drivers　were　invited　to　the　driving　simulation　test,　and　then　their　vehicles＇　dynamic　data　from　the　experiment　was　analyzed　by　the　researchers.　The　research　team　studied　the　operational　safety　of　different　spacing　of　linear　guide　signs　regarding　the　vehicles＇　track　offset.　©　ASCE　.