diff --git a/Simulation.cpp b/Simulation.cpp
index 98081c63f424fd45da587bbae19018f1e8b1d7ce..2e0054d4727c6736d817ec52550c5939f4227ee9 100644
--- a/Simulation.cpp
+++ b/Simulation.cpp
@@ -546,6 +546,10 @@ double Simulation::RunBody(double maxSimTime)
                 }
             }
 
+            if (_routingEngine->isNeedUpdate()){
+                 _routingEngine->UpdateRouter();
+            }
+
             //update the routes and locations
             UpdateRoutesAndLocations();
 
diff --git a/events/EventManager.cpp b/events/EventManager.cpp
index a60104f15de87a132b85265e3caf37ff9095e670..899273427301ed63a63b369033a73a0e0a3396f5 100644
--- a/events/EventManager.cpp
+++ b/events/EventManager.cpp
@@ -25,7 +25,6 @@
  *
  **/
 
-
 #include <string>
 #include <cstdlib>
 #include <iostream>
@@ -537,6 +536,7 @@ void EventManager::ProcessEvent()
                     TempCloseDoor(event.GetId());
                     break;
                }
+               _building->GetRoutingEngine()->setNeedUpdate(true);
           }
 
      }
diff --git a/events/EventManager.h b/events/EventManager.h
index a70385c6c0ff631a73847e0a1bd3915381b60eb0..c43d86a62fa46c89101d574a1e024c9707872c13 100644
--- a/events/EventManager.h
+++ b/events/EventManager.h
@@ -31,7 +31,6 @@
 
 class Building;
 class Router;
-class GlobalRouterTrips;
 class QuickestPathRouter;
 class RoutingEngine;
 class Event;
diff --git a/routing/Router.cpp b/routing/Router.cpp
index a3b8224d3f47c49e9f70dfb9ac286100331a4f27..8220db8ed2e0ddcaefcddbcefa87138c84a114c1 100644
--- a/routing/Router.cpp
+++ b/routing/Router.cpp
@@ -98,3 +98,7 @@ void Router::SetTrips(const Trips& trips){
      _trips = trips;
      std::cout << _trips << std::endl;
 }
+
+void Router::Update(){
+
+}
\ No newline at end of file
diff --git a/routing/Router.h b/routing/Router.h
index dcd5687be747d82dd999ece20e7a90eebc2f8185..eb9b2c93a4eba6dc12c741695fef10f85c6ce3cf 100644
--- a/routing/Router.h
+++ b/routing/Router.h
@@ -142,7 +142,7 @@ public:
 
      void SetTrips(const Trips& trips);
 
-
+     virtual void Update();
 };
 
 #endif  /* _ROUTING_H */
diff --git a/routing/RoutingEngine.cpp b/routing/RoutingEngine.cpp
index 287797055546c37bb5913b8fd4643e849fed7dec..5e09f5b8f5cfcfab27b2a65dd465567109195a62 100644
--- a/routing/RoutingEngine.cpp
+++ b/routing/RoutingEngine.cpp
@@ -131,3 +131,21 @@ bool RoutingEngine::Init(Building* building)
      return status;
 }
 
+bool RoutingEngine::isNeedUpdate() const
+{
+     return _needUpdate;
+}
+
+void RoutingEngine::setNeedUpdate(bool needUpdate)
+{
+     _needUpdate = needUpdate;
+}
+
+void RoutingEngine::UpdateRouter()
+{
+     for (auto* router : _routersCollection){
+          router->Update();
+     }
+     _needUpdate = false;
+}
+
diff --git a/routing/RoutingEngine.h b/routing/RoutingEngine.h
index 94fac8e77b44a56b5b4734c656da47e546490659..ef5bb52a7d72437fdfce1b3286edb3dced5925b9 100644
--- a/routing/RoutingEngine.h
+++ b/routing/RoutingEngine.h
@@ -113,6 +113,13 @@ private:
      std::vector<Router*> _routersCollection;
      /// collection of all trips/routes
      Trips _tripsCollection;
+     bool _needUpdate = false;
+public:
+    bool isNeedUpdate() const;
+
+    void setNeedUpdate(bool needUpdate);
+
+    void UpdateRouter();
 };
 
 #endif /* ROUTINGENGINE_H_ */
diff --git a/routing/ff_router_trips/ffRouterTrips.cpp b/routing/ff_router_trips/ffRouterTrips.cpp
index 349aefebd7bcb1b9382982a886ab677b5dd0f99a..8ec0a604b1151082b7446c3eb86655567af72dd0 100644
--- a/routing/ff_router_trips/ffRouterTrips.cpp
+++ b/routing/ff_router_trips/ffRouterTrips.cpp
@@ -706,4 +706,8 @@ bool FFRouterTrips::MustReInit() {
 
 void FFRouterTrips::SetRecalc(double t) {
      _timeToRecalc = t + _recalc_interval;
+}
+
+void FFRouterTrips::Update(){
+     this->ReInit();
 }
\ No newline at end of file
diff --git a/routing/ff_router_trips/ffRouterTrips.h b/routing/ff_router_trips/ffRouterTrips.h
index 1bd335a11c63f241a6c3e66ded3e8e45e3343578..0c49890526176c0789a936a8023261a581799c65 100644
--- a/routing/ff_router_trips/ffRouterTrips.h
+++ b/routing/ff_router_trips/ffRouterTrips.h
@@ -194,6 +194,8 @@ public:
       bool MustReInit();
       void SetRecalc(double t);
 
+      virtual void Update();
+
 private:
 
 protected: