How many headlamps are required for most vehicles?

Most vehicles are required to have two headlamps to ensure adequate visibility and safety while driving. The two-headlamp system allows for improved illumination of the road ahead, which is essential during low-light conditions, such as nighttime or inclement weather. Additionally, having two headlamps provides redundancy; if one headlamp fails, the other can still provide necessary light, thereby reducing the risk of accidents due to poor visibility. This requirement aligns with safety standards that are designed to protect both the driver and other road users. The absence of sufficient headlamps, such as having only one, could compromise safety and visibility.