Three　kinds　of　transverse　rumble　strips　on　mountainous　expressway　were　selected　to　detect　the　traffic　flow　data　practically.　Small　and　large　vehicles＇　volumes,　operating　speeds　and　discrete　degrees　on　expressway　sections　with　transverse　rumble　strips　were　evaluated　and　normalities　for　speed　were　verified.　Using　regression　analysis　method,　small　and　large　vehicles＇　operating　speed　models　along　the　rumble　strips　were　developed　separately.　At　the　end,　consequent　suggestions　that　strengthened　the　speed　control　on　the　expressway　sections　with　transverse　rumble　strips,　such　as　warning　signs　of　alerting　drivers　and　lengthening　transverse　rumble　strips　were　made.　Results　show　that　the　model　agrees　well　with　measured　data.