highestRoute

    public int highestRoute() {
        SQLiteDatabase db = getReadableDatabase();
        int highRoute = 0;
        try {

            Cursor results = db.rawQuery("SELECT MAX(" + ROUTE_NUMBER + ") FROM " + TABLE_NAME, null);
            if (results.moveToFirst()) {
                highRoute = results.getInt(0);
            }
            results.close();
        } catch (Exception e) {
            Log.e(FixOpenHelper.class.getName(), "Unable to get highestRoute.", e);
        }

        return highRoute;

    }