diff --git a/.env.sample b/.env.sample
index 1bd8647..4f01c63 100644
--- a/.env.sample
+++ b/.env.sample
@@ -1 +1,2 @@
-VITE_KAKAO_MAP_API_KEY=
\ No newline at end of file
+VITE_KAKAO_MAP_API_KEY=
+VITE_API_BASE_URL=
\ No newline at end of file
diff --git a/src/App.tsx b/src/App.tsx
index ecbb313..4210316 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -15,6 +15,7 @@ import { SettingsButton } from "./components/SettingsButton";
 const SettingsPanel = lazy(() => import("./components/SettingsPanel"));
 
 import { QueryClientProvider } from "@tanstack/react-query";
+import { useBusLocations } from "./api/bus";
 import { useBusSelection } from "./hooks/useBusSelection";
 import { queryClient } from "./lib/query-client";
 
@@ -22,7 +23,6 @@ interface DevtoolsProps {
     initialIsOpen?: boolean;
 }
 
-// Conditionally load ReactQueryDevtools only in development
 const ReactQueryDevtools: ComponentType<DevtoolsProps> = import.meta.env.DEV
     ? lazy(() =>
           import("@tanstack/react-query-devtools").then((module) => ({
@@ -61,54 +61,86 @@ function App() {
         { lat: number; lng: number; name: string } | undefined
     >(undefined);
 
-    const handleBusNumberSelect = useBusSelection(setBubbleStop);
-
     return (
         <QueryClientProvider client={queryClient}>
-            <div
-                className="App"
-                style={{
-                    display: "flex",
-                    flexDirection: "column",
-                    height: "100vh",
-                }}
-            >
-                <SettingsButton
-                    showSettings={showSettings}
-                    onToggle={toggleSettings}
-                />
+            <AppContent
+                mapId={mapId}
+                langId={langId}
+                language={language}
+                setLanguage={setLanguage}
+                showSettings={showSettings}
+                toggleSettings={toggleSettings}
+                bubbleStop={bubbleStop}
+                setBubbleStop={setBubbleStop}
+            />
+            {import.meta.env.DEV && <ReactQueryDevtools initialIsOpen={false} />}
+        </QueryClientProvider>
+    );
+}
 
-                {showSettings ? (
-                    <Suspense fallback={null}>
-                        <SettingsPanel
-                            langId={langId}
-                            language={language}
-                            setLanguage={setLanguage}
-                            onClose={() => setShowSettings(false)}
-                        />
-                    </Suspense>
-                ) : null}
-                <MapContainer mapId={mapId}>
-                    <Bubble
-                        stop={bubbleStop}
-                        onClose={() => setBubbleStop(undefined)}
-                    />
-                </MapContainer>
-                <BusStopsPanel
-                    onBusNumberSelect={handleBusNumberSelect}
-                    onToggleBubble={(stop) => {
-                        setBubbleStop((prev) =>
-                            prev === stop ? undefined : stop
-                        );
-                    }}
-                />
-            </div>
-            {import.meta.env.DEV && (
+interface AppContentProps {
+    mapId: string;
+    langId: string;
+    language: string;
+    setLanguage: (lang: string) => void;
+    showSettings: boolean;
+    toggleSettings: () => void;
+    bubbleStop: { lat: number; lng: number; name: string } | undefined;
+    setBubbleStop: React.Dispatch<React.SetStateAction<{ lat: number; lng: number; name: string } | undefined>>;
+}
+
+function AppContent({
+    mapId,
+    langId,
+    language,
+    setLanguage,
+    showSettings,
+    toggleSettings,
+    bubbleStop,
+    setBubbleStop,
+}: AppContentProps) {
+    const { data: buses = [] } = useBusLocations();
+    const handleBusNumberSelect = useBusSelection(buses, setBubbleStop);
+
+    return (
+        <div
+            className="App"
+            style={{
+                display: "flex",
+                flexDirection: "column",
+                height: "100vh",
+            }}
+        >
+            <SettingsButton
+                showSettings={showSettings}
+                onToggle={toggleSettings}
+            />
+
+            {showSettings ? (
                 <Suspense fallback={null}>
-                    <ReactQueryDevtools initialIsOpen={false} />
+                    <SettingsPanel
+                        langId={langId}
+                        language={language}
+                        setLanguage={setLanguage}
+                        onClose={toggleSettings}
+                    />
                 </Suspense>
-            )}
-        </QueryClientProvider>
+            ) : null}
+            <MapContainer mapId={mapId}>
+                <Bubble
+                    stop={bubbleStop}
+                    onClose={() => setBubbleStop(undefined)}
+                />
+            </MapContainer>
+            <BusStopsPanel
+                onBusNumberSelect={handleBusNumberSelect}
+                onToggleBubble={(stop) => {
+                    setBubbleStop((prev) =>
+                        prev === stop ? undefined : stop
+                    );
+                }}
+            />
+        </div>
     );
 }
 
diff --git a/src/api/bus.ts b/src/api/bus.ts
new file mode 100644
index 0000000..a5c2928
--- /dev/null
+++ b/src/api/bus.ts
@@ -0,0 +1,16 @@
+import { useQuery } from "@tanstack/react-query";
+import type { Bus } from "../data/bus";
+import { apiGet } from "../lib/api";
+import { API_ENDPOINTS } from "../lib/endpoints";
+
+export const useBusLocations = () => {
+    return useQuery({
+        queryKey: ["busLocations"],
+        queryFn: async () => {
+            const data = await apiGet<Bus[]>(API_ENDPOINTS.BUS.LOCATION);
+            return Array.isArray(data) ? data : [];
+        },
+        refetchInterval: 20000,
+        refetchIntervalInBackground: true,
+    });
+};
diff --git a/src/components/MapContainer.tsx b/src/components/MapContainer.tsx
index 1c3962f..940db01 100644
--- a/src/components/MapContainer.tsx
+++ b/src/components/MapContainer.tsx
@@ -1,5 +1,5 @@
 import type { ReactNode } from "react";
-import { buses } from "../data/bus";
+import { useBusLocations } from "../api/bus";
 import { busStops } from "../data/busStops";
 import { useKakaoMap } from "../hooks/useKakaoMap";
 import { useMapEventHandlers } from "../hooks/useMapEventHandlers";
@@ -14,8 +14,9 @@ interface MapContainerProps {
 export const MapContainer = ({ mapId, children }: MapContainerProps) => {
     const { toast } = useToast();
     const map = useKakaoMap({ mapId, toast });
+    const { data: buses = [] } = useBusLocations();
 
-    useMapOverlays(map, [...busStops], [...buses]);
+    useMapOverlays(map, [...busStops], buses);
     useMapEventHandlers(mapId);
 
     return (
diff --git a/src/data/bus.ts b/src/data/bus.ts
index 8e83183..37e3cc3 100644
--- a/src/data/bus.ts
+++ b/src/data/bus.ts
@@ -2,7 +2,7 @@ export interface Bus {
     shuttleId: string;
     lat: number;
     lng: number;
-    direction: string | null;
+    direction: boolean | null;
 }
 
 export const buses: ReadonlyArray<Bus> = [
@@ -16,24 +16,24 @@ export const buses: ReadonlyArray<Bus> = [
         shuttleId: "bus2",
         lat: 37.323637,
         lng: 127.120047,
-        direction: "단국대학교",
+        direction: true, // 단국대학교
     },
     {
         shuttleId: "bus3",
         lat: 37.323779,
         lng: 127.117087,
-        direction: "죽전역",
+        direction: false, // 죽전역
     },
     {
         shuttleId: "bus4",
         lat: 37.323921,
         lng: 127.114126,
-        direction: "단국대학교",
+        direction: true, // 단국대학교
     },
     {
         shuttleId: "bus5",
         lat: 37.324063,
         lng: 127.111166,
-        direction: "죽전역",
+        direction: false, // 죽전역
     },
 ];
diff --git a/src/hooks/useBusSelection.ts b/src/hooks/useBusSelection.ts
index b70da98..7f38cb2 100644
--- a/src/hooks/useBusSelection.ts
+++ b/src/hooks/useBusSelection.ts
@@ -1,8 +1,9 @@
 import type { Dispatch, SetStateAction } from "react";
-import { buses } from "../data/bus";
+import type { Bus } from "../data/bus";
 import { moveToLocation } from "./useMapMovement";
 
 export const useBusSelection = (
+    buses: Bus[],
     setBubbleStop: Dispatch<
         SetStateAction<{ lat: number; lng: number; name: string } | undefined>
     >
@@ -14,8 +15,8 @@ export const useBusSelection = (
             if (bus && Number.isFinite(bus.lat) && Number.isFinite(bus.lng)) {
                 moveToLocation(bus.lat, bus.lng);
                 try {
-                    const dir = bus.direction?.trim() ?? "";
-                    const label = dir ? `셔틀버스(${dir} 방향)` : "셔틀버스";
+                    const direction = bus.direction === true ? "단국대학교" : bus.direction === false ? "죽전역" : "";
+                    const label = direction ? `셔틀버스(${direction} 방향)` : "셔틀버스";
                     setBubbleStop({ lat: bus.lat, lng: bus.lng, name: label });
                 } catch {
                     /* ignore */
diff --git a/src/lib/api.ts b/src/lib/api.ts
new file mode 100644
index 0000000..1205d73
--- /dev/null
+++ b/src/lib/api.ts
@@ -0,0 +1,16 @@
+import ky from "ky";
+
+const apiClient = ky.create({
+    prefixUrl: import.meta.env.VITE_API_BASE_URL || "",
+    timeout: 10000,
+});
+
+export const apiGet = async <T, P = undefined>(
+    url: string,
+    params?: P
+): Promise<T> => {
+    const response = await apiClient.get(url, {
+        searchParams: params as Record<string, string | number | boolean>,
+    });
+    return response.json<T>();
+};
diff --git a/src/lib/endpoints.ts b/src/lib/endpoints.ts
index 5bc1057..742acf7 100644
--- a/src/lib/endpoints.ts
+++ b/src/lib/endpoints.ts
@@ -1,6 +1,6 @@
 export const API_ENDPOINTS = {
     // 시내 버스 관련
     BUS: {
-        SEARCH: "/bus/search",
+        LOCATION: "api/shuttle/location",
     },
 } as const;