What is one of the benefits of using headlights effectively at night?

Using headlights effectively at night primarily increases visibility for the driver. This is essential for safe driving as it illuminates the road ahead, allowing the driver to see obstacles, pedestrians, and any road signs or markings that may be crucial for navigation. Proper use of headlights helps to ensure that drivers can react in time to unforeseen circumstances, significantly reducing the risk of accidents during night driving or in low-light conditions.

The other options do not relate directly to the primary function of headlights. For instance, while better visibility can contribute to driving more safely, it does not inherently lead to decreased fuel consumption or allow for faster driving. Moreover, headlights do not have any effect on traffic signals or their operation. Thus, the key benefit of using headlights effectively is to enhance the driver’s visibility, thereby promoting safety on the road.