diff --git a/src/front/map.js b/src/front/map.js
index 1953999..64b4af9 100644
--- a/src/front/map.js
+++ b/src/front/map.js
@@ -23,15 +23,31 @@ h0NmFsdzQ3emxqIn0.cyxF0h36emIMTk3cc4VqUw`;
 
 const network = require('../tam/network.json');
 
+const getRouteColors = routes =>
+{
+    const colors = routes.filter(
+        // Only consider normal routes (excluding alternate routes)
+        ([lineRef, routeRef]) =>
+        network.lines[lineRef].routes[routeRef].state === 'normal'
+    ).map(([lineRef]) => network.lines[lineRef].color);
+
+    if (colors.length >= 1)
+    {
+        return colors;
+    }
+
+    return ['#FFFFFF'];
+};
+
 const makeDataSources = async () =>
 {
     const segmentsSource = new VectorSource();
     const stopsSource = new VectorSource();
 
     segmentsSource.addFeatures(
-        Object.values(network.segments).map(({lines, points}) =>
+        Object.values(network.segments).map(({routes, points}) =>
             new Feature({
-                colors: lines.map(line => network.lines[line].color),
+                colors: getRouteColors(routes),
                 geometry: new LineString(points.map(
                     ({lat, lon}) => proj.fromLonLat([lon, lat])
                 )),
@@ -40,9 +56,9 @@ const makeDataSources = async () =>
     );
 
     stopsSource.addFeatures(
-        Object.values(network.stops).map(({lines, lon, lat}) =>
+        Object.values(network.stops).map(({routes, lon, lat}) =>
             new Feature({
-                colors: lines.map(line => network.lines[line].color),
+                colors: getRouteColors(routes),
                 geometry: new Point(proj.fromLonLat([lon, lat])),
             })
         )