diff --git a/src/Ramcar/InvalidPlateNumber.php b/src/Ramcar/InvalidPlateNumber.php
new file mode 100644
index 00000000..43f3a736
--- /dev/null
+++ b/src/Ramcar/InvalidPlateNumber.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Ramcar;
+
+class InvalidPlateNumber
+{
+    static public function isInvalid($plate_number)
+    {
+        $number = strtoupper($plate_number);
+        switch($number)
+        {
+            case 'NONE':
+            case '000000':
+            case '0000':
+                return false;
+        }
+
+        return true;
+    }
+}