A Surface Movement Area/Runway Traffic and Surface Area Flow Tool with Runway Incursion Protection System reduces runway incursions due to lost or disoriented aircraft, navigation in low visibility conditions, unfamiliarity with local procedures and airport layouts, and truncated or misunderstood clearances...http://www.google.de/patents/US20030009278?utm_source=gb-gplus-sharePatent US20030009278 - Surface traffic movement system and method
