A portable ground-supported automobile traffic control device including an upright, double-sided human-shaped figure which is so constructed and configured as to simulate a traffic control officer, and having one arm and hand in a raised position and carrying thereon, back-to-back electrical stop-and-go...http://www.google.de/patents/US5001475?utm_source=gb-gplus-sharePatent US5001475 - Portable traffic control device
