diff --git a/.env.example b/.env.example
index c5c9993..4db1a26 100644
--- a/.env.example
+++ b/.env.example
@@ -1,3 +1,3 @@
 CARGORADAR_PORT=8080
 ADMIN_TOKEN=
-KAKAO_JAVASCRIPT_KEY=5e0f889314e6d4f26fb18ee63d09c1ec
+KAKAO_JAVASCRIPT_KEY=07f4728599ceaf4299f77c772a135423
diff --git a/.env.nas.example b/.env.nas.example
index 9267765..fe862fa 100644
--- a/.env.nas.example
+++ b/.env.nas.example
@@ -1,3 +1,3 @@
 CARGORADAR_PORT=18081
 ADMIN_TOKEN=change_this_admin_token
-KAKAO_JAVASCRIPT_KEY=5e0f889314e6d4f26fb18ee63d09c1ec
+KAKAO_JAVASCRIPT_KEY=07f4728599ceaf4299f77c772a135423
diff --git a/README.md b/README.md
index 48832cb..f5b97ff 100644
--- a/README.md
+++ b/README.md
@@ -136,6 +136,10 @@ $body = @{
   accuracy = 12
   speed = 42
   heading = 90
+  cargoName = "전자부품"
+  cargoWeight = "1.2t"
+  origin = "서울 상차지"
+  destination = "평택 물류센터"
   recordedAt = (Get-Date).ToUniversalTime().ToString("o")
 } | ConvertTo-Json
 
diff --git a/apps/server/src/server.js b/apps/server/src/server.js
index 9a47251..e9690e5 100644
--- a/apps/server/src/server.js
+++ b/apps/server/src/server.js
@@ -9,7 +9,7 @@ const PORT = Number(process.env.PORT || 8080);
 const DATA_DIR = process.env.DATA_DIR || path.resolve(__dirname, "..", "data");
 const WEB_ROOT = process.env.WEB_ROOT || path.resolve(__dirname, "..", "..", "web", "public");
 const ADMIN_TOKEN = process.env.ADMIN_TOKEN || "";
-const DEFAULT_KAKAO_JAVASCRIPT_KEY = "5e0f889314e6d4f26fb18ee63d09c1ec";
+const DEFAULT_KAKAO_JAVASCRIPT_KEY = "07f4728599ceaf4299f77c772a135423";
 
 const DRIVERS_FILE = path.join(DATA_DIR, "drivers.json");
 const LATEST_FILE = path.join(DATA_DIR, "latest-locations.json");
@@ -400,6 +400,10 @@ function createLocationRecord(body, driver) {
     speed: optionalNumber(body.speed),
     heading: optionalNumber(body.heading),
     batteryLevel: optionalNumber(body.batteryLevel),
+    cargoName: optionalString(body.cargoName || body.cargoItem || body.cargo || body.itemName, 80),
+    cargoWeight: optionalString(body.cargoWeight || body.weight, 40),
+    origin: optionalString(body.origin || body.departure, 80),
+    destination: optionalString(body.destination || body.arrival, 80),
     provider: body.provider ? String(body.provider) : "",
     recordedAt: normalizeDate(body.recordedAt),
     receivedAt: new Date().toISOString()
@@ -426,6 +430,11 @@ function optionalNumber(value) {
   return Number.isFinite(parsed) ? parsed : null;
 }
 
+function optionalString(value, maxLength) {
+  if (value === undefined || value === null) return "";
+  return String(value).trim().slice(0, maxLength);
+}
+
 function normalizeDate(value) {
   if (!value) return new Date().toISOString();
   const parsed = new Date(value);
diff --git a/apps/web/public/app.js b/apps/web/public/app.js
index 546b8ed..9236a32 100644
--- a/apps/web/public/app.js
+++ b/apps/web/public/app.js
@@ -1,5 +1,6 @@
 const state = {
   map: null,
+  mapProvider: "",
   markers: new Map(),
   infoOverlay: null,
   drivers: new Map(),
@@ -51,26 +52,31 @@ document.addEventListener("DOMContentLoaded", () => {
 async function initializeMap() {
   const kakaoJavaScriptKey = window.CARGORADAR_CONFIG?.kakaoJavaScriptKey || "";
 
-  if (!kakaoJavaScriptKey) {
-    showMapMessage("Kakao JavaScript 키가 설정되지 않았습니다.");
-    return;
+  if (kakaoJavaScriptKey) {
+    try {
+      await loadKakaoMapsSdk(kakaoJavaScriptKey);
+      const center = new kakao.maps.LatLng(36.45, 127.85);
+      state.map = new kakao.maps.Map(document.getElementById("map"), {
+        center,
+        level: 13
+      });
+      state.mapProvider = "kakao";
+
+      state.map.addControl(new kakao.maps.ZoomControl(), kakao.maps.ControlPosition.RIGHT);
+      state.map.addControl(new kakao.maps.MapTypeControl(), kakao.maps.ControlPosition.TOPRIGHT);
+      hideMapMessage();
+      updateMarkers({ fitBounds: state.locations.size > 0 });
+      return;
+    } catch (error) {
+      console.warn("Kakao map unavailable. Falling back to OpenStreetMap.", error);
+    }
   }
 
   try {
-    await loadKakaoMapsSdk(kakaoJavaScriptKey);
-    const center = new kakao.maps.LatLng(36.45, 127.85);
-    state.map = new kakao.maps.Map(document.getElementById("map"), {
-      center,
-      level: 13
-    });
-
-    state.map.addControl(new kakao.maps.ZoomControl(), kakao.maps.ControlPosition.RIGHT);
-    state.map.addControl(new kakao.maps.MapTypeControl(), kakao.maps.ControlPosition.TOPRIGHT);
-    hideMapMessage();
-    updateMarkers({ fitBounds: state.locations.size > 0 });
+    await initializeLeafletMap();
   } catch (error) {
     console.error(error);
-    showMapMessage("Kakao 지도 키 또는 허용 도메인을 확인하세요.");
+    showMapMessage("지도 로딩에 실패했습니다. 네트워크 상태를 확인하세요.");
   }
 }
 
@@ -84,12 +90,88 @@ function loadKakaoMapsSdk(appKey) {
     const script = document.createElement("script");
     script.src = `https://dapi.kakao.com/v2/maps/sdk.js?appkey=${encodeURIComponent(appKey)}&autoload=false`;
     script.async = true;
-    script.onload = () => kakao.maps.load(resolve);
+    script.onload = () => {
+      if (!window.kakao?.maps) {
+        reject(new Error("kakao_maps_not_authorized"));
+        return;
+      }
+      kakao.maps.load(resolve);
+    };
     script.onerror = () => reject(new Error("kakao_maps_load_failed"));
     document.head.appendChild(script);
   });
 }
 
+async function initializeLeafletMap() {
+  await loadLeafletAssets();
+  state.mapProvider = "leaflet";
+  state.map = L.map("map", {
+    attributionControl: true,
+    zoomControl: true
+  }).setView([36.45, 127.85], 7);
+
+  L.tileLayer("https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png", {
+    maxZoom: 19,
+    attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
+  }).addTo(state.map);
+
+  showMapMessage("카카오맵 권한 전까지 OpenStreetMap으로 표시 중");
+  window.setTimeout(hideMapMessage, 4500);
+  updateMarkers({ fitBounds: state.locations.size > 0 });
+}
+
+function loadLeafletAssets() {
+  if (window.L?.map) return Promise.resolve();
+
+  const version = "1.9.4";
+  const stylesheet = loadStylesheet(
+    "leaflet-stylesheet",
+    `https://unpkg.com/leaflet@${version}/dist/leaflet.css`
+  );
+  const script = loadScript(
+    "leaflet-script",
+    `https://unpkg.com/leaflet@${version}/dist/leaflet.js`
+  );
+
+  return Promise.all([stylesheet, script]).then(() => {
+    if (!window.L?.map) throw new Error("leaflet_load_failed");
+  });
+}
+
+function loadStylesheet(id, href) {
+  return new Promise((resolve, reject) => {
+    if (document.getElementById(id)) {
+      resolve();
+      return;
+    }
+
+    const link = document.createElement("link");
+    link.id = id;
+    link.rel = "stylesheet";
+    link.href = href;
+    link.onload = resolve;
+    link.onerror = () => reject(new Error(`${id}_load_failed`));
+    document.head.appendChild(link);
+  });
+}
+
+function loadScript(id, src) {
+  return new Promise((resolve, reject) => {
+    if (document.getElementById(id)) {
+      resolve();
+      return;
+    }
+
+    const script = document.createElement("script");
+    script.id = id;
+    script.src = src;
+    script.async = true;
+    script.onload = resolve;
+    script.onerror = () => reject(new Error(`${id}_load_failed`));
+    document.head.appendChild(script);
+  });
+}
+
 function bindActions() {
   elements.refreshButton.addEventListener("click", refreshLatestLocations);
   elements.demoButton.addEventListener("click", postDemoLocation);
@@ -180,6 +262,10 @@ async function postDemoLocation() {
         accuracy: 12,
         speed: 42,
         heading: Math.round((now / 1000) % 360),
+        cargoName: "전자부품",
+        cargoWeight: "1.2t",
+        origin: "서울 상차지",
+        destination: "평택 물류센터",
         provider: "demo",
         recordedAt: new Date().toISOString()
       })
@@ -225,8 +311,8 @@ function upsertLocation(location, options = {}) {
     loadLocationHistory(location);
   }
 
-  if (options.focus && state.map && window.kakao?.maps) {
-    state.map.setCenter(new kakao.maps.LatLng(location.latitude, location.longitude));
+  if (options.focus) {
+    centerMapOnLocation(location);
   }
 }
 
@@ -465,13 +551,13 @@ async function copyToken(token) {
 }
 
 function updateMarkers({ fitBounds = false } = {}) {
-  if (!state.map || !window.kakao?.maps) return;
+  if (!state.map || !state.mapProvider) return;
 
   const activeIds = new Set(state.locations.keys());
 
-  for (const [driverId, markerOverlay] of state.markers) {
+  for (const [driverId, marker] of state.markers) {
     if (!activeIds.has(driverId)) {
-      markerOverlay.setMap(null);
+      removeMarker(marker);
       state.markers.delete(driverId);
     }
   }
@@ -481,54 +567,149 @@ function updateMarkers({ fitBounds = false } = {}) {
   }
 
   if (fitBounds && state.markers.size > 0) {
+    fitMapToLocations();
+  }
+}
+
+function updateMarker(location) {
+  if (!state.map || !state.mapProvider) return;
+
+  if (state.mapProvider === "leaflet") {
+    updateLeafletMarker(location);
+    return;
+  }
+
+  updateKakaoMarker(location);
+}
+
+function updateKakaoMarker(location) {
+  const position = new kakao.maps.LatLng(location.latitude, location.longitude);
+  const status = getLocationStatus(location);
+  const markerElement = createTruckMarkerElement(location, status);
+
+  let marker = state.markers.get(location.driverId);
+
+  if (!marker) {
+    marker = {
+      provider: "kakao",
+      overlay: new kakao.maps.CustomOverlay({
+        position,
+        content: markerElement,
+        yAnchor: 1
+      })
+    };
+    marker.overlay.setMap(state.map);
+    state.markers.set(location.driverId, marker);
+  } else {
+    marker.overlay.setPosition(position);
+    marker.overlay.setContent(markerElement);
+  }
+}
+
+function updateLeafletMarker(location) {
+  const status = getLocationStatus(location);
+  const position = [location.latitude, location.longitude];
+  const icon = L.divIcon({
+    className: `leaflet-truck-marker truck-marker ${status.key}`,
+    html: createTruckMarkerHtml(location, status),
+    iconSize: [58, 34],
+    iconAnchor: [29, 34],
+    popupAnchor: [0, -30]
+  });
+
+  let marker = state.markers.get(location.driverId);
+
+  if (!marker) {
+    marker = {
+      provider: "leaflet",
+      marker: L.marker(position, { icon, title: location.vehicleNo || location.driverId })
+    };
+    marker.marker.on("click", () => focusLocation(location));
+    marker.marker.addTo(state.map);
+    state.markers.set(location.driverId, marker);
+  } else {
+    marker.marker.setLatLng(position);
+    marker.marker.setIcon(icon);
+    marker.marker.off("click");
+    marker.marker.on("click", () => focusLocation(location));
+  }
+}
+
+function createTruckMarkerElement(location, status) {
+  const markerElement = document.createElement("button");
+  markerElement.className = `truck-marker ${status.key}`;
+  markerElement.type = "button";
+  markerElement.title = location.vehicleNo || location.driverId;
+  markerElement.setAttribute("aria-label", `${location.vehicleNo || location.driverId} 위치 보기`);
+  markerElement.innerHTML = createTruckMarkerHtml(location, status);
+  markerElement.addEventListener("click", () => focusLocation(location));
+  return markerElement;
+}
+
+function createTruckMarkerHtml(location) {
+  const label = location.vehicleNo ? location.vehicleNo.slice(-4) : location.driverId.slice(0, 4);
+  return `
+    <span class="truck-marker__trailer">${escapeHtml(label)}</span>
+    <span class="truck-marker__cab"></span>
+  `;
+}
+
+function removeMarker(marker) {
+  if (marker.provider === "kakao") {
+    marker.overlay.setMap(null);
+    return;
+  }
+
+  if (marker.provider === "leaflet") {
+    marker.marker.remove();
+  }
+}
+
+function fitMapToLocations() {
+  if (state.mapProvider === "kakao") {
     const bounds = new kakao.maps.LatLngBounds();
     for (const location of state.locations.values()) {
       bounds.extend(new kakao.maps.LatLng(location.latitude, location.longitude));
     }
     state.map.setBounds(bounds);
+    return;
+  }
+
+  if (state.mapProvider === "leaflet") {
+    const bounds = L.latLngBounds([...state.locations.values()].map((location) => {
+      return [location.latitude, location.longitude];
+    }));
+    state.map.fitBounds(bounds, {
+      maxZoom: 14,
+      padding: [40, 40]
+    });
   }
 }
 
-function updateMarker(location) {
-  if (!state.map || !window.kakao?.maps) return;
+function centerMapOnLocation(location, options = {}) {
+  if (!state.map || !state.mapProvider) return;
 
-  const position = new kakao.maps.LatLng(location.latitude, location.longitude);
-  const status = getLocationStatus(location);
-  const label = location.vehicleNo ? location.vehicleNo.slice(-4) : location.driverId.slice(0, 4);
+  if (state.mapProvider === "kakao") {
+    const position = new kakao.maps.LatLng(location.latitude, location.longitude);
+    state.map.setCenter(position);
+    if (options.zoom && state.map.getLevel() > 4) {
+      state.map.setLevel(4);
+    }
+    return;
+  }
 
-  const markerElement = document.createElement("button");
-  markerElement.className = `kakao-marker ${status.key}`;
-  markerElement.type = "button";
-  markerElement.textContent = label;
-  markerElement.title = location.vehicleNo || location.driverId;
-  markerElement.addEventListener("click", () => focusLocation(location));
-
-  let markerOverlay = state.markers.get(location.driverId);
-
-  if (!markerOverlay) {
-    markerOverlay = new kakao.maps.CustomOverlay({
-      position,
-      content: markerElement,
-      yAnchor: 1
-    });
-    markerOverlay.setMap(state.map);
-    state.markers.set(location.driverId, markerOverlay);
-  } else {
-    markerOverlay.setPosition(position);
-    markerOverlay.setContent(markerElement);
+  if (state.mapProvider === "leaflet") {
+    const nextZoom = options.zoom ? Math.max(state.map.getZoom(), 14) : state.map.getZoom();
+    state.map.setView([location.latitude, location.longitude], nextZoom, { animate: true });
   }
 }
 
 function focusLocation(location) {
   loadLocationHistory(location);
 
-  if (!state.map || !window.kakao?.maps) return;
+  if (!state.map || !state.mapProvider) return;
 
-  const position = new kakao.maps.LatLng(location.latitude, location.longitude);
-  state.map.setCenter(position);
-  if (state.map.getLevel() > 4) {
-    state.map.setLevel(4);
-  }
+  centerMapOnLocation(location, { zoom: true });
   showInfoOverlay(location);
 }
 
@@ -588,15 +769,24 @@ function closeHistoryDrawer() {
 
 function showInfoOverlay(location) {
   const status = getLocationStatus(location);
-  const position = new kakao.maps.LatLng(location.latitude, location.longitude);
   const content = createPopupElement(location, status);
 
-  if (!state.infoOverlay) {
-    state.infoOverlay = new kakao.maps.CustomOverlay({
-      yAnchor: 1.25
-    });
+  if (state.mapProvider === "leaflet") {
+    state.infoOverlay = L.popup({
+      closeButton: true,
+      offset: [0, -24]
+    })
+      .setLatLng([location.latitude, location.longitude])
+      .setContent(content)
+      .openOn(state.map);
+    return;
   }
 
+  const position = new kakao.maps.LatLng(location.latitude, location.longitude);
+
+  if (!state.infoOverlay) {
+    state.infoOverlay = new kakao.maps.CustomOverlay({ yAnchor: 1.35 });
+  }
   state.infoOverlay.setContent(content);
   state.infoOverlay.setPosition(position);
   state.infoOverlay.setMap(state.map);
@@ -613,13 +803,20 @@ function createPopupElement(location, status) {
   const driver = document.createElement("div");
   driver.textContent = `${location.driverName || location.driverId} · ${status.label}`;
 
+  const cargo = document.createElement("div");
+  cargo.className = "popup-cargo";
+  cargo.textContent = `화물: ${getCargoSummary(location)}`;
+
+  const destination = document.createElement("div");
+  destination.textContent = getRouteSummary(location);
+
   const receivedAt = document.createElement("div");
-  receivedAt.textContent = formatDateTime(location.receivedAt);
+  receivedAt.textContent = `수신: ${formatDateTime(location.receivedAt)}`;
 
-  const coordinate = document.createElement("div");
-  coordinate.textContent = `${formatCoordinate(location.latitude)}, ${formatCoordinate(location.longitude)}`;
+  const movement = document.createElement("div");
+  movement.textContent = `속도: ${formatSpeed(location.speed)}`;
 
-  container.append(title, driver, receivedAt, coordinate);
+  container.append(title, driver, cargo, destination, movement, receivedAt);
   return container;
 }
 
@@ -706,10 +903,42 @@ function formatTime(value) {
   }).format(date);
 }
 
+function formatSpeed(value) {
+  if (value === null || value === undefined || value === "") return "-";
+  const speed = Number(value);
+  if (!Number.isFinite(speed)) return "-";
+  return `${Math.round(speed)} km/h`;
+}
+
 function formatCoordinate(value) {
   return Number(value).toFixed(5);
 }
 
+function getCargoSummary(location) {
+  const cargoName = firstString(location.cargoName, location.cargoItem, location.cargo, location.itemName);
+  const cargoWeight = firstString(location.cargoWeight, location.weight);
+  return [cargoName, cargoWeight].filter(Boolean).join(" · ") || "미등록";
+}
+
+function getRouteSummary(location) {
+  const origin = firstString(location.origin, location.departure);
+  const destination = firstString(location.destination, location.arrival);
+
+  if (origin && destination) return `구간: ${origin} -> ${destination}`;
+  if (destination) return `도착지: ${destination}`;
+  if (origin) return `상차지: ${origin}`;
+  return "도착지: 미등록";
+}
+
+function firstString(...values) {
+  for (const value of values) {
+    if (value === undefined || value === null) continue;
+    const text = String(value).trim();
+    if (text) return text;
+  }
+  return "";
+}
+
 function escapeHtml(value) {
   return String(value)
     .replaceAll("&", "&amp;")
diff --git a/apps/web/public/styles.css b/apps/web/public/styles.css
index 45bc0c3..1df45f5 100644
--- a/apps/web/public/styles.css
+++ b/apps/web/public/styles.css
@@ -498,31 +498,94 @@ button:hover {
   font-weight: 800;
 }
 
-.kakao-marker {
-  display: flex;
-  align-items: center;
-  justify-content: center;
+.truck-marker {
+  --truck-color: var(--blue);
+  --truck-cab: #1556b8;
+  position: relative;
+  display: inline-flex;
+  align-items: flex-end;
   width: max-content;
-  min-width: 42px;
-  min-height: 30px;
-  padding: 0 9px;
-  border: 2px solid #ffffff;
-  border-radius: 999px;
-  background: var(--blue);
+  min-width: 56px;
+  min-height: 34px;
+  border: 0;
+  padding: 0 0 7px;
+  background: transparent;
   color: #ffffff;
-  box-shadow: 0 8px 18px rgba(16, 32, 48, 0.25);
-  font-size: 11px;
-  font-weight: 900;
+  filter: drop-shadow(0 8px 13px rgba(16, 32, 48, 0.28));
   font-family: inherit;
   cursor: pointer;
 }
 
-.kakao-marker.stale {
-  background: var(--amber);
+.truck-marker.stale {
+  --truck-color: var(--amber);
+  --truck-cab: #8f4307;
 }
 
-.kakao-marker.offline {
-  background: var(--red);
+.truck-marker.offline {
+  --truck-color: var(--red);
+  --truck-cab: #8f1d15;
+}
+
+.truck-marker::before,
+.truck-marker::after {
+  content: "";
+  position: absolute;
+  bottom: 1px;
+  width: 7px;
+  height: 7px;
+  border: 2px solid #ffffff;
+  border-radius: 50%;
+  background: #17212b;
+}
+
+.truck-marker::before {
+  left: 10px;
+}
+
+.truck-marker::after {
+  right: 11px;
+}
+
+.truck-marker__trailer {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  min-width: 38px;
+  height: 22px;
+  padding: 0 7px;
+  border: 2px solid #ffffff;
+  border-right: 0;
+  border-radius: 5px 0 0 5px;
+  background: var(--truck-color);
+  font-size: 11px;
+  font-weight: 900;
+  line-height: 1;
+  white-space: nowrap;
+}
+
+.truck-marker__cab {
+  position: relative;
+  width: 18px;
+  height: 19px;
+  border: 2px solid #ffffff;
+  border-radius: 0 6px 5px 0;
+  background: var(--truck-cab);
+}
+
+.truck-marker__cab::before {
+  content: "";
+  position: absolute;
+  top: 3px;
+  right: 3px;
+  width: 7px;
+  height: 5px;
+  border-radius: 1px;
+  background: rgba(255, 255, 255, 0.72);
+}
+
+.leaflet-truck-marker {
+  border: 0;
+  background: transparent;
 }
 
 .kakao-popup {
@@ -543,6 +606,11 @@ button:hover {
   font-weight: 900;
 }
 
+.popup-cargo {
+  margin-top: 6px;
+  font-weight: 900;
+}
+
 @media (max-width: 860px) {
   .app-shell {
     grid-template-rows: auto minmax(0, 1fr);
diff --git a/docs/SYNOLOGY.md b/docs/SYNOLOGY.md
index ab68d37..0d51a07 100644
--- a/docs/SYNOLOGY.md
+++ b/docs/SYNOLOGY.md
@@ -44,7 +44,7 @@ tested with `curl -k` while the certificate is being prepared.
 ```text
 CARGORADAR_PORT=8080
 ADMIN_TOKEN=
-KAKAO_JAVASCRIPT_KEY=5e0f889314e6d4f26fb18ee63d09c1ec
+KAKAO_JAVASCRIPT_KEY=07f4728599ceaf4299f77c772a135423
 ```
 
 For NAS deployment, start from `.env.nas.example` instead. The recommended NAS
@@ -53,7 +53,7 @@ host port is `18081` because `18080` is already forwarded for `opendaw`.
 ```text
 CARGORADAR_PORT=18081
 ADMIN_TOKEN=change_this_admin_token
-KAKAO_JAVASCRIPT_KEY=5e0f889314e6d4f26fb18ee63d09c1ec
+KAKAO_JAVASCRIPT_KEY=07f4728599ceaf4299f77c772a135423
 ```
 
 `ADMIN_TOKEN` can stay blank during local MVP testing. For NAS exposure, set it.