External airbag deployment method and system

An external airbag deployment method comprising:

• setting, by a controller, a detection area located in front of a vehicle;
• selecting, by the controller, an object as a target object from objects detected in the detection area, when an object has a relative velocity greater than a first reference, an overlap greater than a second reference, and a Time To EAB (External Airbag) (TTE) less than a third reference, wherein TTE is a remaining time until the object collides with an airbag cushion when the external airbag is predicted to be deployed;
• determining, by the controller, whether the vehicle is stable by comparing a predicted yaw rate of the vehicle with a measured yaw rate;
• determining, by the controller, whether a relative velocity and an overlap, predicted at a time when the target object is predicted to collide with the vehicle, are greater than predetermined levels;
• and
• deploying, by the controller, the external airbag when the vehicle is stable and the predicted relative velocity and overlap of the target object are greater than the predetermined levels.