Patent ID: 8604918

Claim:
A system for detecting whether one more vehicles are in the vicinity of a first vehicle using wireless communication, the system comprising: a plurality of wireless signal transmitting units configured to generate a wireless signal; a plurality of wireless signal receiving units configured to receive the wireless signal generated within a nearby vehicle; a nearby vehicle distance calculation unit configured to calculate a distance to the nearby vehicle according to a strength of a received wireless signal from the nearby vehicle; a nearby vehicle location estimation unit configured to estimate a location of the nearby vehicle by using a distance between the plurality of the wireless signal receiving units and the calculated distance to the nearby vehicle; a nearby vehicle driving speed estimation unit configured to estimate a driving speed of the nearby vehicle based on a travel distance per a unit of time of the nearby vehicle by using the location of the nearby vehicle; and a nearby vehicle driving direction estimation unit configured to estimate a driving direction of the nearby vehicle by using the location of the nearby vehicle.