added identifyHazard

RoadSensor.java

@@ -16,5 +16,17 @@ public class RoadSensor {
         return 45;
     }
 
+    public int identifyHazard() {
+        //image processing algorithms from external cameras would
+        //review data and identify a hazard
+        //types of hazards could be
+        //Stopped vehicle
+        //Road construction
+        //lane closure
+        //pedestrian on roadway
+        //stationary object on roadway
+        //for testing, this function will return 0 to signal no hazard detected
+        return 0;
+    }
     
 }