Patent ID: 9685086
Date: 2017-06-20
CPC Classifications: G01S,G08G,H04W,Y02D

Claim:
1. A method, comprising: sending, by a device, collision avoidance safety messages to prevent potential collisions between vehicles and the device; determining, by the device, whether a current or predicted future location of the device intersects an action zone, wherein an action zone corresponds to a geographic area in which a potential collision may occur between a vehicle and the device; adjusting, by the device, a broadcast rate for the collision avoidance safety messages based on whether the device determines that the current or predicted future location of the device intersects an action zone, wherein adjusting the broadcast rate for the collision avoidance safety messages comprises: determining, by the device, an off period of time for a radio transceiver of the device based on the broadcast sleep period and an amount of time needed for the transceiver to power back on, wherein the device uses the radio transceiver to send the collision avoidance safety messages.