傳統協同式緊急剎車警示系統基於全球衛星定位資訊做為危險警示點，然而目前全球衛星定位資訊之誤差仍會造成許多錯誤警示，使駕駛者一直收到緊急剎車警示導致系統搭載意願降低。本研究提出雷達輔助之協同式緊急剎車警示系統，利用衛星定位技術所提供之資訊來判斷車輛是否緊急剎車，透過短距無線通訊技術廣播緊急剎車警示訊息，鄰近車輛收到此緊急剎車警示訊息後，根據自身雷達測距判斷與前方障礙物距離是否低於安全門檻，以達到準確警示駕駛者注意小心。

The cooperative emergency electronics brake warning system has become an important research topic in recent years. Many cooperative emergency electronics brake warning system products are proved in the real
world. However, these cooperative emergency electronics brake warning system products cannot provide emergency braking events warning from the vehicle in front. Hence, this paper proposes a dedicated short range communications system combined with radar detection for a cooperative emergency electronics brake warning system.