Entering Custom AvoidsThe Custom Avoids feature allows you to enter specific areas androads to avoid when navigating. Custom Avoids apply to all routes,but detours apply to only the active route. You can add CustomAvoids while you are navigating a route or before you navigate.To enter a custom avoid:1. Press NAV while navigating to a destination.OROpen the Map Page, and press MENU.2. Select Custom Avoids, and press ENTER.3. Press ENTER when the Add Avoid button is highlighted.4. Select Avoid Road or Avoid Area, and press ENTER.5. Use the ROCKER to move the arrow to the first point in theavoidance area. Press ENTER to select the first point.6. Move the arrow to the end point, and press ENTER. Duringroute calculation and navigation, the GPSMAP 378/478 willavoid the area within the box or the selected area of the road.7. When finished, highlight the OK button, and press ENTER.Creating a DetourIf there is road construction or some other form of a detour whilenavigating a route, you can have your GPSMAP 378/478 create adetour route for you.To create a detour:1. While navigating a course, press NAV.2. Select Detour from the Navigate Menu.3. Select a distance, and press ENTER. The GPSMAP 378/478recalculates your course based on your detour distance.4. To end the detour manually, press NAV again, and selectCancel Detour.GPSMAP 378/478 Owner’s Manual 61AutoMotIve Mode > edItIng your route
