Is It Correct to Alternate Between High and Low Beams When Driving on Sharp Curves?

[DeKennedy]

Correct. According to Article 59 of the "Regulations for the Implementation of the Road Traffic Safety Law": When motor vehicles pass through sharp curves, slopes, arched bridges, crosswalks, or intersections without traffic signal control at night, they should alternate between high and low beams as a signal. High and low beams are used in the following situations: 1. High beams: High beams are generally suitable for driving at night on roads without streetlights or with poor lighting, such as on dimly lit national highways or expressways. If the speed is below 30 km/h, low beams should be used, while speeds above 30 km/h allow the use of high beams, which can illuminate up to 150 meters ahead to ensure driving safety. 2. Low beams: When an oncoming vehicle is within 150 meters, high beams should be switched to low beams to avoid obstructing the other driver's vision. If the other driver does not switch to low beams, immediately reduce speed and continuously alternate between high and low beams as a signal. If the other driver still does not change, slow down and pull over to the right to yield, avoiding any aggressive use of high beams that could impair both drivers' vision and lead to an accident.

[JasperFitz]

I've been driving for over ten years, often on winding mountain roads. To be honest, alternating between high and low beams on sharp curves isn't very reliable. Think about it – visibility is already poor on curves, and flashing lights back and forth not only distracts you but also blinds oncoming drivers. If the other driver gets blinded and crashes into you, that's serious trouble. I remember trying it once on a rainy day and almost slid off the road. Since then, I've learned my lesson: slow down on curves, stick to low beams or automatic lights, and let your eyes adjust to the brightness. It's manageable during the day, but absolutely not at night, especially in fog or rain/snow when light reflection is stronger. Now I always teach my friends not to make this mistake—safety comes first. If you really need to warn other drivers, honking or a quick flash of the lights is enough; don't keep switching repeatedly on curves. In short, avoid fancy maneuvers when driving—stay steady and protect yourself and others.

[VanBrandon]

I've thought about this issue myself, and from a technical perspective, frequently switching between high and low beams on curves isn't a good idea. High beams project straight with long range but strong focus - at sharp turns the light can't illuminate the inner side of the curve and may instead cause glare that increases blind spots. Low beams have a lower angle and illumination range better suited for capturing road conditions on curves. Alternating between them increases driver reaction time, affects bulb lifespan, and circuit fluctuations may even blow fuses. I've discussed this with mechanics, and they all recommend maintaining low beam status when navigating curves, supplementing with reduced speed and turn signals when necessary for greater safety. Don't risk flashing lights just to see the road - modern cars with automatic sensing systems handle this better, but for manual driving, simpler operations are best. Road safety is no joke - small habits can prevent major disasters.

[SanOlivia]

When I first started driving, I was curious about this and asked my driving instructor whether I should flash my lights on sharp turns. The instructor immediately scolded me, telling me not to mess around. He said that visibility is limited on curves, and flashing lights could easily make the other party think you're overtaking or provoking them, causing unnecessary panic. Actually, just using low beams is fine—the light source is stable, and road signs and obstacles are clearly visible. If it's too dark, you can add fog lights for assistance. Alternating between lights is both mentally taxing and dangerous, especially at night when the drastic changes in light make it hard for the eyes to adjust. Now I strictly follow what the instructor taught me: adjust the lights and slow down before turning. Beginners often make this kind of mistake, thinking it's a clever trick when it actually backfires. Practicing safe driving habits is what really matters.