In　order　to　provide　a　theoretical　basis　for　the　design　and　operational　safety　evaluation　of　freeways,　453　combined　alignment　sections　of　a　four-lane　two-way　freeway　were　selected　to　study　the　dynamic　visual　fixation　points　on　pavements　of　13　drivers　according　to　drivers＇　fixation　characteristics　in　processes　of　＇driver-vehicle-road＇　cooperation.　The　distribution　of　drivers＇　fixation　points　on　pavements　and　the　characteristics　of　the　fixation　concentration　region　were　analyzed　under　different　running　speeds　and　various　combined　alignment　sections.　In　addition,　a　concept　of　driver　expectation　sight　distance　was　proposed,　and　a　computational　model　of　the　driver　expectation　sight　distance　was　built　for　different　running　speeds.　The　results　show　that　the　driver　expectation　sight　distance　is　related　to　the　running　speed　and　horizontal　radius.　When　the　horizontal　radius　is　less　than　or　equal　to　800　m,　drivers＇　visual　field　will　be　restricted　as　the　running　speed　increases,　and　some　speed　limit　measures　should　be　taken　to　ensure　the　driving　safety.