Fire　safety　of　a　semi-enclosed　public　transportation　hub　in　a　comprehensive　transportation　center　was　analyzed.　Smoke　propagation　under　an　extreme　fire　scenario　where　fire　occurred　at　the　center　of　the　hub　was　studied.　On-site　measured　data　at　portals　were　set　to　the　boundary　conditions　in　a　numerical　simulation.　A　quick　t2　fire　model　with　a　maximum　heat　release　rate　of　30　MW　was　used　to　simulate　a　bus　fire.　Large　eddy　simulation　technology　was　used　to　predict　smoke　propagation　under　two　fire　scenarios,　where　smoke　exhaust　fans　operated　or　not.　Results　show　that　operation　of　a　smoke　control　system　could　provide　safe　evacuation　within　six　minutes　when　a　fire　occurred　in　the　center　of　the　hub.　Given　such　results,　domestic　underground　garage　smoke　control　system　design　specifications　should　be　considered　for　semi-enclosed　spaces　such　as　transit　hubs.　©,　2015,　Editorial　Board　of　Journal　of　HEU.　All　right　reserved.