+
+ void set_traffic_manager(TrafficManager &);
+ void add_train(Train3D &);
+ void remove_train(Train3D &);
+ Train3D &get_train(const Train &) const;
+
+ Msp::GL::Scene &get_scene() { return scene; }
+ Msp::GL::Scene &get_endpoint_scene() { return ep_scene; }
+