diff --git a/sumo_project/config.py b/sumo_project/config.py
new file mode 100644
index 0000000..4b04b14
--- /dev/null
+++ b/sumo_project/config.py
@@ -0,0 +1,22 @@
+"""
+Global configuration for the simulation
+"""
+
+import os
+import sys
+
+if 'SUMO_HOME' in os.environ:
+    tools = os.path.join(os.environ['SUMO_HOME'], 'tools')
+    sys.path.append(tools)
+else:
+    sys.exit("please declare environment variable 'SUMO_HOME'")
+
+_SUMOCMD = 'sumo-gui'
+_SUMOCFG = "mulhouse_simulation/map.sumocfg"
+CELLS_NUMBER = 10
+CO2_THRESHOLD = 500000
+
+sumo_binary = os.path.join(os.environ['SUMO_HOME'], 'bin', _SUMOCMD)
+sumo_cmd = [sumo_binary, "-c", _SUMOCFG]
+
+
diff --git a/sumo_project/emissions.py b/sumo_project/emissions.py
index e76ac22..7766ade 100644
--- a/sumo_project/emissions.py
+++ b/sumo_project/emissions.py
@@ -1,22 +1,9 @@
-import os
-import sys
+import traci
+import config
 
 from SUMOFactory import SUMOFactory
-
-if 'SUMO_HOME' in os.environ:
-    tools = os.path.join(os.environ['SUMO_HOME'], 'tools')
-    sys.path.append(tools)
-else:
-    sys.exit("please declare environment variable 'SUMO_HOME'")
-
-import traci
 from area import Area
 
-sumoBinary = os.path.join(os.environ['SUMO_HOME'], 'bin', 'sumo-gui')
-sumoCmd = [sumoBinary, "-c", "mulhouse_simulation/map.sumocfg"]
-CELLS_NUMBER = 10
-CO2_THRESHOLD = 500000
-
 
 def init_grid(simulation_bounds, cells_number):
     width = simulation_bounds[1][0] / cells_number
@@ -46,7 +33,7 @@ def emission_for_area(area):
 def get_emissions(areas, factory):
     for area in areas:
         emission_for_area(area)
-        if area.emissions > CO2_THRESHOLD:
+        if area.emissions > config.CO2_THRESHOLD:
             # print(f'Threshold exceeded in {area.name} : {area.emissions}')
             factory.lock_area(area)
             traci.polygon.setColor(area.name, (255, 0, 0))
@@ -55,8 +42,8 @@ def get_emissions(areas, factory):
 
 def main():
     try:
-        traci.start(sumoCmd)
-        grid = init_grid(traci.simulation.getNetBoundary(), CELLS_NUMBER)
+        traci.start(config.sumo_cmd)
+        grid = init_grid(traci.simulation.getNetBoundary(), config.CELLS_NUMBER)
         while traci.simulation.getMinExpectedNumber() > 0:
             traci.simulationStep()
             get_emissions(grid, SUMOFactory())