diff --git a/components/i_feed/vehicle.py b/components/i_feed/vehicle.py
index 2cc64ce..3a70f87 100644
--- a/components/i_feed/vehicle.py
+++ b/components/i_feed/vehicle.py
@@ -15,6 +15,8 @@ STARTING_VELOCITY = 130
 BEARING = 90
 # Scale speed of vehicles by factor x
 SCALING = 1
+# At x km the NCE shall happen
+NCE_KM = 0.1
 
 
 class Vehicle:
@@ -23,6 +25,7 @@ class Vehicle:
     timestamp: Union[datetime, None]
     _driven_kms: int
     _gps_location: geopy.Point
+    _nce_happened = False
 
     def __init__(self,
                  vin: str,
@@ -32,12 +35,23 @@ class Vehicle:
         self._gps_location = starting_point
         self.velocity = starting_velocity
 
-    def daf(self, invoke_nce=False):
+    @property
+    def nce(self):
+        nce = self._nce_happened
+        if nce:
+            if NCE_KM >= self._driven_kms:
+                nce = True
+                self._nce_happened = nce
+                self.velocity = 0
+        return nce
+
+    @property
+    def daf(self):
         return DAF(vehicle_identification_number=self.vin,
                    gps_location=self.gps_location,
                    velocity=self.velocity,
                    timestamp=self.timestamp,
-                   near_crash_event=invoke_nce
+                   near_crash_event=self.nce
                    )
 
     @property