How many times should the high and low beams be alternated?

[EmersonLynn]

The number of times to alternate between high and low beams is as follows: 1. When driving through sharp curves, slopes, arch bridges, or crosswalks at night, alternate between high and low beams no fewer than 3 times. 2. When passing through intersections without traffic signals at night, alternate between high and low beams no fewer than 3 times. 3. When overtaking a vehicle ahead at night, alternate between high and low beams no fewer than 3 times. The two methods for alternating between high and low beams are as follows: 1. Light control lever: Locate the light control lever on the left side of the steering wheel, first turn on the low beams (rotate the knob to the low beam position), then pull the light control lever toward yourself to temporarily activate the high beams. Release the lever, and it will spring back, automatically turning off the high beams while keeping the low beams on. This completes one cycle of alternating between high and low beams. 2. Light control knob: Locate the light control knob on the left side of the dashboard, first turn it to the low beam position to turn on the low beams, then use the light control lever on the left side of the steering wheel to pull it toward yourself once. The high beams will temporarily turn on, and when released, the lever will spring back, automatically turning off the high beams. This completes one cycle of alternating between high and low beams.

[Eileen]

Having driven for decades, I've found that the number of times you toggle between high and low beams is quite nuanced. When encountering oncoming vehicles at night, I usually switch to low beams about 200 meters in advance to avoid dazzling the other driver—just one toggle suffices. However, when overtaking a slower vehicle ahead, I lightly press the light switch once or twice, quickly alternating between high and low beams to flash the lights briefly. This effectively signals 'yield the lane' without causing confusion or irritation. Repeated flashing can seem provocative or unnecessarily tense. I often remind novice drivers: keeping it simple and effective is key—one or two toggles is optimal. Don't forget to maintain your headlight system regularly to ensure responsive operation; otherwise, delayed or failed switching could increase risks. In short, when balancing safety and courtesy, less is more.

[EthanLynn]

As an advocate for safe driving, I believe that alternating between high and low beams should be precisely controlled in terms of frequency. When driving at night and encountering oncoming traffic, it is essential to immediately switch to low beams in one decisive action without hesitation, as this can prevent accidents. If the intention is to signal the vehicle ahead to yield or to indicate an obstacle, quickly toggle between high and low beams once or twice—just enough to make the lights flash briefly; any more could become a distraction or even illegal. According to traffic regulations, high beams should only be used when there are no oncoming vehicles, and alternating beams is meant to avoid misjudgment. In practice, I emphasize that each operation should be decisive and limited to one or two flashes, ensuring the other party clearly sees and understands the intention. Additionally, it's important to check the vehicle's lighting settings to prevent misunderstandings caused by uneven brightness. The core of safe driving lies in restraint and clarity—avoid unnecessary switching whenever possible.

[LaHayden]

In terms of automotive lighting, alternating the lights is mainly for signaling purposes, such as overtaking reminders or nighttime encounters with oncoming vehicles. My opinion is that one or two flashes are generally sufficient. Specifically: when encountering an oncoming vehicle, switch to low beam once; when a reminder is needed, quickly toggle the switch once or twice to make the light flash. Repeated operations may overload the circuit and burn out the bulb. Personally, I would check the lighting module to ensure a quick response. Keep it simple and avoid unnecessary complexity.