How should a commercial bus driver respond when the Advanced Driver Assistance System triggers a Forward Collision Warning (FCW / 前向碰撞预警) or Lane Departure Warning (LDW / 车道偏离预警)?

1. Deactivate the sensor unit with tape and ignore the warning sounds
2. Slam on the brakes and make a sharp U-turn immediately
3. Immediately focus visual attention on the road ahead, evaluate the hazard, check mirrors, and smoothly apply braking or steer back into the lane center
4. Assume the system is malfunctioning and accelerate