diff --git a/Scripts/assignment/assignment_period.py b/Scripts/assignment/assignment_period.py
index 3df13a11..5145fa45 100644
--- a/Scripts/assignment/assignment_period.py
+++ b/Scripts/assignment/assignment_period.py
@@ -124,22 +124,22 @@ def assign(self, matrices: dict, iteration: Union[int,str]) -> Dict:
                 self._calc_background_traffic()
             self._assign_cars(param.stopping_criteria_coarse)
             self._calc_extra_wait_time()
-            self._assign_transit()
+            self._assign_congested_transit() if param.always_congested else self._assign_transit()
         elif iteration==0:
             self._set_car_and_transit_vdfs()
             if not self._separate_emme_scenarios:
                 self._calc_background_traffic()
             self._assign_cars(param.stopping_criteria_coarse)
             self._calc_extra_wait_time()
-            self._assign_transit()
+            self._assign_congested_transit() if param.always_congested else self._assign_transit()
         elif iteration==1:
             if not self._separate_emme_scenarios:
                 self._set_car_and_transit_vdfs()
                 self._calc_background_traffic()
             self._assign_cars(param.stopping_criteria_coarse)
             self._calc_extra_wait_time()
-            self._assign_transit()
-            self._calc_background_traffic(include_trucks=True)
+            self._assign_congested_transit()
+            self._assign_congested_transit() if param.always_congested else self._assign_transit()
         elif isinstance(iteration, int) and iteration>1:
             if not self._separate_emme_scenarios:
                 self._set_car_and_transit_vdfs()
@@ -147,7 +147,7 @@ def assign(self, matrices: dict, iteration: Union[int,str]) -> Dict:
             self._assign_cars(
                 param.stopping_criteria_coarse, lightweight=True)
             self._calc_extra_wait_time()
-            self._assign_transit()
+            self._assign_congested_transit() if param.always_congested else self._assign_transit()
         elif iteration=="last":
             self._set_bike_vdfs()
             self._assign_bikes(self.emme_matrices["bike"]["dist"], "all")
@@ -424,7 +424,7 @@ def _set_emmebank_matrices(self,
         tmp_mtx = {
             "bike": 0,
         }
-        if not is_last_iteration:
+        if not (param.always_congested or is_last_iteration):
             tmp_mtx["transit"] = 0
         for mtx in matrices:
             mode = mtx.split('_')[0]
@@ -474,7 +474,7 @@ def _get_matrices(self,
         matrices = {}
         for ass_class, mtx_types in self.emme_matrices.items():
             if (mtx_type in mtx_types and
-                    (is_last_iteration or ass_class not in last_iter_classes)):
+                    (param.always_congested or is_last_iteration or ass_class not in last_iter_classes)):
                 if mtx_type == "time" and ass_class in param.assignment_modes:
                     mtx = self._extract_timecost_from_gcost(ass_class)
                 elif mtx_type == "time" and ass_class in param.transit_classes:
@@ -482,7 +482,7 @@ def _get_matrices(self,
                 else:
                     mtx = self._get_matrix(ass_class, mtx_type)
                 matrices[ass_class] = mtx
-        if not is_last_iteration:
+        if not (param.always_congested or is_last_iteration):
             matrices["transit_leisure"] = matrices["transit_work"]
         return matrices
 
diff --git a/Scripts/modelsystem.py b/Scripts/modelsystem.py
index 67fcb32b..11986f9f 100644
--- a/Scripts/modelsystem.py
+++ b/Scripts/modelsystem.py
@@ -135,7 +135,7 @@ def _add_internal_demand(self, previous_iter_impedance, is_last_iteration):
                 purpose_impedance = self.imptrans.transform(
                     purpose, previous_iter_impedance)
                 purpose.generate_tours()
-                if is_last_iteration:
+                if param.always_congested or is_last_iteration:
                     for mode in purpose.model.dest_choice_param:
                         self._distribute_sec_dests(
                             purpose, mode, purpose_impedance)
@@ -322,7 +322,8 @@ def run_iteration(self, previous_iter_impedance, iteration=None):
             impedance[tp] = ap.assign(self.dtm.demand[tp], iteration)
             if tp == "aht":
                 self._update_ratios(impedance[tp], tp)
-            if iteration=="last":
+            if iteration=="last": # TODO: Get uncongested time from assignment results
+                log.warn('TODO: Get uncongested transit time from the assignment results')
                 impedance[tp]["time"]["transit_uncongested"] = previous_iter_impedance[tp]["time"]["transit_work"]
                 self._save_to_omx(impedance[tp], tp)
         if iteration=="last":
@@ -594,7 +595,7 @@ def _add_internal_demand(self, previous_iter_impedance, is_last_iteration):
         elif nr_threads <= 0:
             nr_threads = 1
         bounds = next(iter(purpose.sources)).bounds
-        modes = purpose.modes if is_last_iteration else ["car"]
+        modes = purpose.modes if param.always_congested or is_last_iteration else ["car"]
         for mode in modes:
             threads = []
             for i in range(nr_threads):