In　order　to　reduce　traffic　accidents　and　improve　the　comprehensive　operation　level　of　the　road　intersection,　this　paper　was　aimed　at　the　utility　evaluation　and　the　optimization　of　traffic　safety　devices　at　the　road　intersection.　The　effective　evaluation　and　optimal　selection　of　the　traffic　safety　combination　devices　were　realized　based　on　the　micro-driving　behavior　data　at　the　road　intersection.　Firstly,　the　highway　intersections　were　classified　by　dint　of　highway　crossing　patterns,　the　width　of　crossed　highways,　and　traffic　signal　types,　whilst　traffic　safety　devices　were　classified　into　ten　sub-types　based　on　their　functions.　Secondly,　according　to　the　analysis　of　the　field　observation,　different　traffic　safety　devices　assemblies　were　designed　corresponding　to　existing　problems　at　distinct　types　of　intersections,　thus　forming　3　or　4　corresponding　schemes.　Then,　by　means　of　driving　simulation　experiment,　nine　evaluation　indicators　were　selected　to　assess　the　effects　of　traffic　safety　devices　at　highway　intersections　from　the　perspectives　of　security,　foreseeability　and　comfortableness.　Based　on　that,　the　optimized　installation　model　of　traffic　safety　devices　of　the　highway　intersection　was　suggested.　Finally,　the　typical　highway　arterial　intersections　were　selected　to　analyze　as　the　case　to　realize　the　optimized　installation　devices.　The　results　show　that　this　method　is　practical　in　addressing　issues　like　the　deployment　of　traffic　safety　devices　at　highway　intersections,　and　lays　the　foundation　of　forming　the　optimized　combination　installation　of　highway　intersection　traffic　safety　devices　in　various　types　of　intersection.　Te　results　provide　the　basis　for　designing　a　manual　for　traffic　safety　device　installation　at　the　arterial　intersections.　©　2017,　Editorial　Department　of　China　Journal　of　Highway　and　Transport.　All　right　reserved.