initial commit

src/app/@core/data/traffic-bar.ts

@@ -0,0 +1,11 @@
+import { Observable } from 'rxjs';
+
+export interface TrafficBar {
+  data: number[];
+  labels: string[];
+  formatter: string;
+}
+
+export abstract class TrafficBarData {
+  abstract getTrafficBarData(period: string): Observable<TrafficBar>;
+}