diff --git a/src/repository.ts b/src/repository.ts
index b8dfb77..f0aafd3 100644
--- a/src/repository.ts
+++ b/src/repository.ts
@@ -67,6 +67,7 @@ export interface Repository {
 
   getShuttlesBySystemId(systemId: string): Promise<IShuttle[]>;
   getShuttleById(shuttleId: string): Promise<IShuttle | null>;
+  getShuttlesByRouteId(routeId: string): Promise<IShuttle[]>;
 
   getEtasForShuttleId(shuttleId: string): Promise<IEta[]>;
   getEtasForStopId(stopId: string): Promise<IEta[]>;
diff --git a/src/unoptimizedInMemoryRepository.ts b/src/unoptimizedInMemoryRepository.ts
index d550843..e7f919f 100644
--- a/src/unoptimizedInMemoryRepository.ts
+++ b/src/unoptimizedInMemoryRepository.ts
@@ -41,6 +41,10 @@ export class UnoptimizedInMemoryRepository implements Repository {
     return this.shuttles.filter(shuttle => shuttle.systemId === systemId);
   }
 
+  public async getShuttlesByRouteId(routeId: string) {
+    return this.shuttles.filter(shuttle => shuttle.routeId === routeId);
+  }
+
   public async getShuttleById(shuttleId: string) {
     return this.findEntityById(shuttleId, this.shuttles);
   }