A railroad collision avoidance system and method are disclosed that utilize impulse radio technology to effectively warn a person when there is a locomotive in their vicinity. In one embodiment, the railroad collision avoidance system includes a transmitting impulse radio unit coupled to a locomotive...http://www.google.fr/patents/US20040155760?utm_source=gb-gplus-shareBrevet US20040155760 - Railroad collision avoidance system and method for preventing train accidents
Railroad collision avoidance system and method for preventing train accidents
Numéro de demande: 10/753,891 Numéro de publication: US 2004/0155760 A1 Date de dépôt: 8 janv. 2004 Brevet délivré: US6917284 ( Date de délivrance 12 juil. 2005)
