Your Honda and Acura vehicle is equipped with Collision Mitigation Braking System. (CMBS). Collision Mitigation Braking System helps reduce the likelihood or severity of a frontal impact. Powered by a combination of radar transmitter and forward-facing camera, the system determines the distance and closing speed of detected objects that lie directly ahead. When the system senses that a frontal collision is unavoidable, even if no prior alerts have been given, strong braking is automatically applied to help reduce the impact velocity and collision force.