You are driving a commercial vehicle at night and an oncoming vehicle does not dim its high beams. What is the safest response?

1. Flash your high beams repeatedly until the other driver dims theirs
2. Stare directly at the oncoming headlights to gauge their distance
3. Look toward the right side of the road or the right lane edge to avoid being blinded, and slow down
4. Turn off your own headlights briefly to signal the other driver