Index: trunk/src/atmsdriver/model/LoopDetector.java
===================================================================
--- trunk/src/atmsdriver/model/LoopDetector.java	(revision 176)
+++ trunk/src/atmsdriver/model/LoopDetector.java	(revision 180)
@@ -121,3 +121,57 @@
         loopElement.appendChild(spdElement);
     }
+    
+    /**
+     * Enum for highway status dot colors. Each color has associated volume
+     * and occupancy constants.
+     *
+     * @author John A. Torres, jdalbey
+     * @version 10/11/2017
+     */
+    public static enum DOTCOLOR {
+
+        RED(1, 0.06f),    // "Stopped" is less than 25mph
+        YELLOW(3,0.059f), // speed = 26
+        GREEN(0,0);
+        
+        // All the first letters of the values, in order.
+        public static String allLetters = "RYG";
+        
+        private int vol;  /* volume */
+        private float occ;  /* occupancy */      
+        
+        private DOTCOLOR(int v, float o)
+        {
+            vol = v;
+            occ = o;
+        }
+        /**
+         * Return the first letter of this enum.
+         *
+         * @return String first letter of this enum.
+         */
+        public String getLetter() {
+            return this.toString().substring(0, 1);
+        }
+
+        public int volume()
+        {
+            return vol;
+        }
+        public float occupancy()
+        {
+            return occ;
+        }
+        /**
+         * Returns a dot color given its first character.
+         *
+         * @param letter the first character of a dot color
+         * @return dot color corresponding to letter
+         * @pre letter must be one of allLetters
+         */
+        public static DOTCOLOR toDotColor(String letter) {
+            return values()[allLetters.indexOf(letter.charAt(0))];
+        }
+    }  
+    
 }