ITS　can　make　the　effective　use　of　the　existing　transportation　infrastructure,　so　that　the　traffic　flow　can　effectively　be　distributed　in　time　and　space.　Using　ITS　can　reduce　traffic　accidents,　ease　traffic　congestion,　shorten　the　travel　time,　reduce　traffic　pollution　and　improve　urban　transportation　management　level.　In　the　paper,　the　key　technology　of　the　car　road　cooperative　technology　is　been　researched,　the　model　which　is　built　in　this　paper　be　determined　as　data　prediction　model　which　is　belonged　to　the　traffic　information　processing　module　internal　of　the　car　road　cooperative　system.　Construct　the　early　warning　model　that　based　on　the　car　road　cooperative　technology,　and　the　input　and　output　parameters　of　the　model　then　be　determined,　evaluation　index　which　is　used　to　analysis　the　reasonableness　of　the　model　and　accuracy　of　the　prediction　results.　Do　the　model　simulation　experiment　which　is　combined　with　calculating　examples,　do　the　comparative　analysis　of　the　simulation　experiment　results.　The　calculating　results　show　that　the　model　been　build　has　higher　accuracy　than　the　traditional　model,　by　calculating　evaluation　index　such　as　the　model　correlation　coefficient,　that　the　model　be　built　in　the　paper　can　be　used　as　the　warning　model　which　is　based　on　the　condition　of　the　car　road　cooperative　technology.　©　2016,　UK　Simulation　Society.　All　rights　reserved.