OSMEdge.cs:

+ GetWeight()
+ override toString()
  fixed maxSpeedValue 255 -> returns now empty

OSMDatastructure/OSMEdge.cs

@@ -133,8 +133,12 @@ public class OsmEdge
                 }
             case "maxspeed":
                 try
-                { 
-                    return new KeyValuePair<tagType, object>(tagType.maxspeed, Convert.ToByte(value));
+                {
+                    byte speed = Convert.ToByte(value);
+                    if(speed == 255)
+                        return new KeyValuePair<tagType, object>(tagType.EMPTY, 0);
+                    else
+                        return new KeyValuePair<tagType, object>(tagType.maxspeed, speed);
                 }
                 catch (Exception)
                 {
@@ -193,4 +197,30 @@ public class OsmEdge
     {
         return this.tags.ContainsKey(tagType.forward) && (bool)this.tags[tagType.forward];
     }
+
+    public double GetWeight(OsmNode parentNode, speedType vehicle)
+    {
+        double distance = Utils.DistanceBetween(parentNode, neighborCoordinates);
+        byte? speedByte = GetMaxSpeed(vehicle);
+        if (speedByte != null && speedByte > 0)
+        {
+            double speed = Convert.ToDouble(speedByte);
+            return distance / (speed * 1000 / 360);
+        }
+        else
+        {
+            return double.MaxValue;
+        }
+    }
+
+    public override string ToString()
+    {
+        string tagsString = "";
+        foreach (KeyValuePair<tagType, object> tag in tags)
+        {
+            tagsString += string.Format("\n\t{0}: {1}", tag.Key, tag.Value);
+        }
+
+        return string.Format("EDGE neighborCoordinates: {0} {1}", neighborCoordinates.ToString(), tagsString);
+    }
 }