.　Intersecting　streams　of　pedestrians　are　frequently　seen　in　subway　stations.　When　two　or　more　such　streams　encounter　each　other　in　the　normal　way,　there　is　interference　of　progress　and　a　reduction　in　speed.　This　research　explores　the　impact　of　roundabout　design　on　intersecting　pedestrian　streams　by　conducting　a　series　of　experiments　on　pedestrians　in　the　field.　First,　the　impact　of　roundabout　size　on　different　volumes　of　pedestrian　traffic　is　examined;　second,　the　effect　of　adding　guiding　signs　is　investigated;　and　third,　a　case　where　a　greater　number　of　streams　intersect　is　studied.　Results　indicate　that,　although　placing　a　roundabout　at　pedestrian　intersections　reduces　the　total　space　available　and　lengthens　the　average　walking　distance,　the　speed　of　pedestrian　streams　increases.　The　experiment　reveals　that　the　larger　the　radius　of　the　roundabout,　the　more　significant　is　the　increase　in　speed　and　the　smaller　is　the　dispersion　of　acceleration.　In　addition,　the　role　of　the　roundabout　becomes　more　important　as　pedestrian　traffic　volume　increases.　Furthermore,　the　addition　of　guiding　signs　before　the　roundabout　entrance　is　helpful　in　terms　of　regulating　the　direction　of　traffic　and　reducing　possible　conflict.　Finally,　the　experiments　reveal　that　inserting　a　roundabout　also　provides　benefits　in　the　case　of　three　intersecting　pedestrian　streams.