Better json structure

networks/roads/Road.py

@@ -1,7 +1,7 @@
 class Road:
-    def __init__(self, coordinates):
+    def __init__(self, coordinates, road_configuration):
         self.coordinates = coordinates  # List of tuples (x1, y1, z1) in order
-        self.road_type = road_type 	# 'road', 'highway'
+        self.road_configuration = road_configuration 	# 'road', 'highway'
 
     def place_roads(self):
         pass