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diff --git a/trailer.py b/trailer.py
index b44a0ab..6112dd5 100644
--- a/trailer.py
+++ b/trailer.py
@@ -1,32 +1,48 @@
-class Trailer:
+from enum import Enum
 
-    def __init__(self, capacity, _type, priority, weight):
-        self.capacity = capacity
+class Priorities(Enum):
+    SMALLEST = 0
+    MEDIUM = 2
+    HIGH = 3
+    HIGHEST = 4
+
+    @staticmethod
+    def whatIsFirst(_prio1, _prio2):
+        if(_prio1 > _prio2):
+            return _prio1
+        elif _prio2 >= _prio1:
+            return _prio2
+
+
+class Trailer:
+    def __init__(self, _type: str, priority: Priorities, weight: float):
+        self.capacity = 1.0
         self.type = _type
         self.priority = priority
-        self.weight = weight
+        self.grossWeight = weight
 
+    def getWeight(self):
+        return self.grossWeight + self.capacity
+
+    def use(self):
+        self.capacity -= 0.1
 
 class Fertilizer(Trailer):  # do nawożenia
-
     def __init__(self):
-        super(Fertilizer, self).__init__(capacity=1, _type="Fertilizer", priority=1, weight=1)  # parametry do uzupełnienia
+        super(Fertilizer, self).__init__("Fertilizer", Priorities.SMALLEST, 100)  # parametry do uzupełnienia
 
 
 class Water(Trailer):  # do podlewania
-
     def __init__(self):
-        super(Water, self).__init__(capacity=1, _type="Water", priority=1, weight=1)  # parametry do uzupełnienia
+        super(Water, self).__init__("Water", Priorities.HIGH, 2000)  # parametry do uzupełnienia
 
 
 class Harvest(Trailer):  # do zbierania
-
     def __init__(self):
-        super(Harvest, self).__init__(capacity=1, _type="Harvest", priority=1, weight=1)  # parametry do uzupełnienia
+        super(Harvest, self).__init__("Harvest", Priorities.SMALLEST, 500)  # parametry do uzupełnienia
 
 
 class Sow(Trailer):  # do siania
-
     def __init__(self):
-        super(Sow, self).__init__(capacity=1, _type="Sow", priority=1, weight=1)  # parametry do uzupełnienia
+        super(Sow, self).__init__("Sow", Priorities.HIGHEST, 200)  # parametry do uzupełnienia