diff --git a/src/loaders/shuttle/ApiBasedShuttleRepositoryLoader.ts b/src/loaders/shuttle/ApiBasedShuttleRepositoryLoader.ts
index 7e6f64e..e2e6a0d 100644
--- a/src/loaders/shuttle/ApiBasedShuttleRepositoryLoader.ts
+++ b/src/loaders/shuttle/ApiBasedShuttleRepositoryLoader.ts
@@ -261,9 +261,8 @@ export class ApiBasedShuttleRepositoryLoader implements ShuttleRepositoryLoader
   }
 
   private async updateEtaDataInRepository(etas: IEta[]) {
-    await Promise.all(etas.map(async (eta) => {
-      await this.repository.addOrUpdateEta(eta);
-    }));
+    // ETAs are now calculated internally by the repository based on shuttle movements
+    // External ETAs from the API are no longer used
   }
 
   private async fetchEtaDataJson(stopId: string) {