If a flying stone shatters the laminated/tempered front windshield of a passenger coach on an expressway, creating an opaque web of cracks that blocks forward vision, what should the driver do?

1. Maintain a firm grip on the steering wheel, keep the vehicle straight, ease off the throttle, observe through clear glass spots or look out the side window, activate hazard flashers, and smoothly guide the bus onto the shoulder
2. Slam on the brakes instantly in the middle lane and stand up on the seat
3. Punch the entire windshield out into the road while traveling at 100 km/h
4. Accelerate and honk to follow the taillights of the vehicle ahead closely