diff --git a/components/i_feed/requirements.txt b/components/i_feed/requirements.txt
new file mode 100644
index 0000000..29a1d83
--- /dev/null
+++ b/components/i_feed/requirements.txt
@@ -0,0 +1,2 @@
+circuitbreaker    # fault tolerance
+
diff --git a/components/i_feed/traffic_light.py b/components/i_feed/traffic_light.py
index 4640904..a0efe5c 100644
--- a/components/i_feed/traffic_light.py
+++ b/components/i_feed/traffic_light.py
@@ -1 +1,6 @@
-# TODO
+from circuitbreaker import circuit
+
+
+@circuit(failure_threshold=10, expected_exception=ConnectionError)
+def external_call():
+    ...
diff --git a/components/i_feed/vehicle.py b/components/i_feed/vehicle.py
index 4640904..a0efe5c 100644
--- a/components/i_feed/vehicle.py
+++ b/components/i_feed/vehicle.py
@@ -1 +1,6 @@
-# TODO
+from circuitbreaker import circuit
+
+
+@circuit(failure_threshold=10, expected_exception=ConnectionError)
+def external_call():
+    ...