Driving at night isn't just daytime driving with less light. Depth perception, peripheral vision, and color recognition all decline after dark, and headlights only illuminate a fraction of the distance you can see during the day. Crash rates climb after sunset for exactly this reason, drivers are working with less information and often don't adjust their habits to make up for it.
Your headlights only reach so far ahead, which means you have less time to react to whatever they reveal, a stopped car, an animal, debris in the road. Increasing your following distance at night gives you the extra reaction time your eyes aren't providing on their own.
Pedestrians, cyclists, and animals are far harder to spot at night, especially in low-light clothing or on unlit roads. Slow down in areas without streetlights, and be especially cautious around dawn and dusk, when lighting is transitional and wildlife is often most active.
Night driving is also when drowsy driving is most common, your body's natural rhythm makes you sleepier after dark regardless of how rested you feel. If you notice yourself drifting in your lane or losing focus, pull over. It's a core part of the hazard awareness covered in our defensive driving strategies guide, recognizing when you're not actually fit to keep driving.