Vehicle crashes account for more than 32,000 deaths each year and are the leading cause of death for Americans between the ages of 4 and 35 years according to the National Highway Traffic Safety Administration (NHTSA). The application of dedicated, short-range wireless communications to the transportation environment in combination with advanced safety applications offers some of the most promising, near-term opportunities for crash reductions. This combination of innovative technologies results in creating communications among vehicles (Vehicle-to-Vehicle or V2V among all vehicle types) and between vehicles and the infrastructure (Vehicle-to-Infrastructure or V2I which may include traffic signals, work zone equipment, or pavement sensors, among other infrastructure elements). Rigorous analysis conducted by the National Highway Traffic Safety Administration proposes that if such systems are deployed, they have the potential to address more than 80 percent of unimpaired driver crashes.(1) However, more research is needed to ensure these technologies are safe and reliable. To do so, the ITS Program has defined a significant test and evaluation effort—the Safety Pilot.