diff --git a/src/tam/simulation.js b/src/tam/simulation.js
index 209f2e4..1cd0314 100644
--- a/src/tam/simulation.js
+++ b/src/tam/simulation.js
@@ -286,6 +286,13 @@ const updateData = async courses => {
             courses[id] = newCourse;
         }
     }
+
+    // Remove stale courses
+    for (const id of Object.keys(courses)) {
+        if (courses[id].departureStop === courses[id].finalStop) {
+            delete courses[id];
+        }
+    }
 };
 
 const tick = (courses, time) => {