As night slowly begins to fall over a city's streets and highways, there is almost always an hour or two during which some cars will have their headlights on and others will not. As a general rule, if you notice the day becoming darker (even just slightly), it's a smart idea to flip your headlights on. Though you may not need your headlights to see the road during these times, other drivers may have an easier time seeing you with your headlights on (especially if the setting sun is behind you, obscuring the view of oncoming traffic). Additionally, it's important to note that in many jurisdictions, driving without your headlights on in the evening or morning can be against the law. For instance, in California, headlights must be on from one-half hour before sunset to one-half hour after sunrise (and during any other low-visibility conditions). As a general rule, night driving requires slower speeds than daytime driving. Because visibility is much lower at nighttime than during the day (even on well-lit urban roads), it takes longer to see and react to traffic hazards, pedestrians, and other obstacles. Since you can't control the types of hazards you'll encounter on your drive but you can control your driving, your smartest move is simply to drive slower, giving yourself more time to react to any problems you come across. You'll never want to "out-drive" your headlights — that is, to drive so fast that you can't stop within the distance illuminated by your headlights in front of you. A good rule of thumb for night driving is: "The posted speed limit is the highest speed that's legal — not the highest speed that's safe." Don't be afraid to go slower than the posted speed limit if you can't see very far in front of you, especially if you're rounding a corner or going over a hilltop, where your visibility is further obscured. Allow other drivers to pass you as needed. Statistically, there are almost always more drunk and overtired drivers on the road at night than there are during the day. This can have deadly...

TL;DR in Chinese:
视野模糊的时候，可以把灯打开。 慢下来。 小心醉驾和疲劳驾驶的司机。 经常休息来对抗疲劳。 注意动物，尤其是在农村地区。 让眼睛动起来。 采取所有正常的白天驾驶预防措施。