Based　on　microscopic　traffic　characteristics　of　two-lane　highway　and　different　driving　characteristics　for　drivers,　the　characteristics　of　drivers　and　vehicle　structure　are　introduced　into　Cellular　Automation　model　for　establishing　new　Cellular　Automation　model　of　two-lane　highway.　Through　computer　simulation,　the　paper　analyzes　the　effect　of　the　promotion　of　different　vehicles,　drivers　and　arrival　rates　on　traffic　conflicts　of　two-lane　highway,　which　gets　the　relationship　between　the　parameters　such　as　road　traffic　and　velocity　variance　and　collision.　The　results　indicate　that　the　frequency　of　traffic　conflicts　has　close　relationship　with　the　product　of　traffic　flow　and　velocity　variation.　When　the　traffic　flow　and　velocity　variation　are　great,　the　frequency　of　the　conflict　is　the　greatest,　and　when　the　traffic　flow　and　velocity　variation　are　little,　the　frequency　of　the　conflict　is　the　least.　©　2013　ACADEMY　PUBLISHER.