Signal drone for an automobile

1. A vehicle comprising:

a body defining a cavity;

a drone system disposed within the cavity and including a warning sign; and

a controller configured to, in response to a user request during a stop, launch the

drone system from the cavity and specify drone position relative to the vehicle based on traffic flow

around the vehicle to alert other vehicles in a vicinity of the vehicle via the warning sign regarding

occurrence of the stop, wherein

the drone position is relative to a front of the vehicle responsive to the traffic flow around the vehicle being bi-directional on a road having at least two lanes and other vehicles are headed toward the front of the vehicle on a trajectory to intersect the vehicle,

the drone position is relative to a rear of the vehicle responsive to the traffic flow around the vehicle being bi-directional on a road having at least two lanes and other vehicles are headed toward the rear of the vehicle on a trajectory to intersect the vehicle,

the drone position is relative to a front and adjacent a side of the vehicle responsive to the traffic flow around the vehicle being uni-directional on a road having at least one lane and other vehicles are headed toward the front of the vehicle on a trajectory adjacent the side of the vehicle, and

the drone position is relative to a rear and adjacent a side of the vehicle responsive to the traffic flow around the vehicle being uni-directional on a road having at least one lane and other vehicles are headed toward the rear of the vehicle on a trajectory adjacent the side the vehicle.

2. The vehicle of claim 1 , wherein the drone position is relative to a front of the vehicle responsive to the traffic flow around the vehicle being uni-directional on a road having at least one lane and other vehicles are headed toward the front of the vehicle on a trajectory to intersect the vehicle.

3. The vehicle of claim 1 , wherein the drone position is relative to a rear of the vehicle responsive to the traffic flow around the vehicle being uni-directional on a road having at least one lane and other vehicles are headed toward the rear of the vehicle on a trajectory to intersect the vehicle.

4. The vehicle of claim 1 , wherein the drone position is relative to a front and adjacent a side of the vehicle responsive to the traffic flow around the vehicle being bi-directional on a road having at least two lanes and other vehicles are headed toward the front of the vehicle on a trajectory adjacent the side of the vehicle.

5. The vehicle of claim 1 , wherein the drone position is relative to a rear and adjacent a side of the vehicle responsive to the traffic flow around the vehicle being bi-directional on a road having at least two lanes and other vehicles are headed toward the rear of the vehicle on a trajectory adjacent the side of the vehicle.

6. An emergency alert system for a vehicle comprising:

a drone system including a warning sign disposed within a body defining cavity of the vehicle; and

a controller configured to, in response to a user request during a stop, launch the drone system from the cavity and specify drone position relative to the vehicle based on traffic flow around the vehicle to alert other vehicles in a vicinity of the vehicle via the warning sign regarding occurrence of the stop, wherein

the drone position is relative to a front of the vehicle responsive to the traffic flow around the vehicle being bi-directional on a road having at least two lanes and other vehicles are headed toward the front of the vehicle on a trajectory to intersect the vehicle,

the drone position is relative to a rear of the vehicle responsive to the traffic flow around the vehicle being bi-directional on a road having at least two lanes and other vehicles are headed toward the rear of the vehicle on a trajectory to intersect the vehicle,

the drone position is relative to a front and adjacent a side of the vehicle responsive to the traffic flow around the vehicle being uni-directional on a road having at least one lane and other vehicles are headed toward the front of the vehicle on a trajectory adjacent the side of the vehicle, and

the drone position is relative to a front and adjacent a side of the vehicle responsive to the traffic flow around the vehicle being uni-directional on a road having at least one lane and other vehicles are headed toward the front of the vehicle on a trajectory adjacent the side of the vehicle.

7. The emergency alert system of claim 6 , wherein the drone position is relative to a rear of the vehicle responsive to the traffic flow around the vehicle being bi-directional on a road having at least two lanes and other vehicles are headed toward the rear of the vehicle on a trajectory to intersect the vehicle.

8. The emergency alert system of claim 6 , wherein the drone position is relative to a rear and adjacent a side of the vehicle responsive to the traffic flow around the vehicle being bi-directional on a road having at least two lanes and other vehicles are headed toward the rear of the vehicle on a trajectory adjacent the side of the vehicle.

9. The emergency alert system of claim 6 , wherein the drone system further includes a plurality of lights attached to the warning sign configured to illuminate at a frequency indicative of a distress signal.

10. The emergency alert system of claim 9 , wherein the controller is further configured to increase an intensity of the plurality of lights so as to exceed a first threshold when ambient light is less than a second threshold.

11. A drone system for a vehicle comprising:

a drone disposed within a storage compartment of the vehicle and having a warning sign attached with the drone; and

a drone controller attached to the drone and configured to, in response to a user request during a vehicle stop, launch the drone from the storage compartment and specify a drone position relative to the vehicle based on traffic flow around the vehicle to alert other vehicles in a vicinity of the vehicle via the warning sign regarding occurrence of the vehicle stop, wherein

the drone position is relative to a front of the vehicle responsive to the traffic flow around the vehicle being bi-directional on a road having at least two lanes and other vehicles are headed toward the front of the vehicle on a trajectory to intersect the vehicle, and

the drone position is relative to a front and adjacent a side of the vehicle responsive to the traffic flow around the vehicle being uni-directional on a road having at least one lane and other vehicles are headed toward the front of the vehicle on a trajectory adjacent the side of the vehicle.

12. The drone system of claim 11 , wherein the drone controller is configured to specify a drone position using a plurality of sensors attached to the drone configured to manipulate drone flight.

13. The drone system of claim 11 further comprising a plurality of lights attached to the warning sign configured to illuminate at a constant frequency.

14. The drone system of claim 13 , wherein the drone controller is further configured to increase light intensity to exceed a first threshold when ambient light is less than a second threshold.

15. The drone system of claim 11 further comprising a plurality of lights attached to the warning sign configured to illuminate at frequency indicative of a distress signal.