How many times should the headlights alternate between high and low beam in Subject 3?

[DavidFitz]

In Subject 3, the headlights should alternate between high and low beam two or more times, typically three times. Additional information is as follows: Subject 3: Subject 3, which includes the road driving skills test and the safe and civilized driving knowledge test, is a part of the motor vehicle driver's license assessment. It is the abbreviated term for the road driving skills and safe and civilized driving knowledge test in the motor vehicle driver's examination. The content of the road driving skills test varies depending on the type of vehicle being licensed. Alternating between high and low beam operation: When an oncoming vehicle is within 150 meters, the high beam should be switched to low beam. If the other party does not switch to low beam, immediately reduce speed and continuously alternate between high and low beam to signal. If the other party still does not change, slow down and pull over to the right to yield. Avoid engaging in a battle of bright lights, as it may impair both drivers' vision and lead to an accident.