I'm using the Bing Maps V8 controls and I can't seem to turn off getting alternate routes.

Hello RJBreneman,

We understand that you’re using the Bing Maps V8 Directions module and trying to hide alternate routes by setting maxRoutes: 1 in setRequestOptions(). The issue is that maxRoutes only limits the number of routes returned by the service, not necessarily what gets displayed. If the control still shows alternates, it’s usually because of how the render options and calculation call are handled.
A. Correct Way to Disable Alternate Routes

1. Ensure calculateDirections() is called after setting options The maxRoutes setting must be applied before calling calculateDirections(). If you set it after, it won’t affect the current request.
2. Use displayDisambiguationPanel and displayRouteSelector options Even if only one route is returned, the UI can still show a selector panel. Disable it like this:

      directionsManager.setRenderOptions({
          itineraryContainer: document.getElementById('itineraryDiv'),
          displayManeuverIcons: false,
          displayPostItineraryItemHints: false,
          displayPreItineraryItemHints: false,
          displayStepWarnings: false,
          displayRouteSelector: false // <-- This hides alternate route UI
      });
      
   

3. Double-check maxRoutes is set to 1

      directionsManager.setRequestOptions({
          routeDraggable: false,
          maxRoutes: 1,
          routeIndex: 0
      });
      
   

4. Call calculateDirections() after all settings

      directionsManager.calculateDirections();
   

B. Why maxRoutes Alone Doesn’t Work?

maxRoutes controls the number of routes requested from the service, but the UI can still show placeholders or allow toggling if displayRouteSelector is true. Disabling that option ensures only the primary route is visible.

function directionsModuleLoaded() {
    directionsManager = new Microsoft.Maps.Directions.DirectionsManager(map);
    directionsManager.setRenderOptions({
        itineraryContainer: document.getElementById('itineraryDiv'),
        waypointPushpinOptions: { draggable: false },
        displayManeuverIcons: false,
        displayPostItineraryItemHints: false,
        displayPreItineraryItemHints: false,
        displayStepWarnings: false,
        displayRouteSelector: false // Important!
    });
    directionsManager.setRequestOptions({
        routeDraggable: false,
        maxRoutes: 1,
        routeIndex: 0
    });
    directionsManager.calculateDirections();
}

Hope this helps!
Thank you!