Driver friend, come in and talk.

First of all, your discrimination: 1. Many national highways are expressways, and many expressways are also national highways. There is a lot of overlap between expressways and other highways. For example, G25 highway of Shen Chang Expressway overlaps with National Highway 205, and the Shanhaiguan-Guangzhou end of G25 is called "National Highway 205" according to the standard. Administratively, we divide expressways into national highways and provincial highways. From the perspective of construction requirements and technology, we divide expressways into expressways, first-class highways and second-class highways. Therefore, the national highway has been repaired smoothly, which may be a first-class national highway. There are also secondary roads in the national highway, which are even worse than grade 4, such as G3 18.

You mean you should ask this question. Compared with the first-class highway, which highway has a higher safety factor? I think 200 kilometers is too close. In the case of no traffic jam, the driving time of a fairly flat 200 km domestic car will probably not exceed 3 hours. At the same distance, it is appropriate to take the national first-class highway. Consider this: the old driver is experienced, or just got his driver's license, and he has a good view during the day, so he can save money by taking the first-class highway. If it is at night or on rainy days, you are in a hurry and the journey is long, so it is more appropriate to take the expressway. It depends on the actual situation.

Compared with the first-class highway, the probability of traffic accidents on the first-class highway is much greater. In fact, there are more car accidents and deaths on the first-class highway than on the expressway. The better the first-class highway, the higher the accident rate, mostly caused by speeding, but only one traffic accident on the expressway is malignant, and there are many news reports, which are easy to mislead people. It's much safer to run at the prescribed speed on the expressway than on the non-expressway.

Driving a private car is the same as driving a bus, and both need to pay attention to safety. The important thing is that no matter what road you take, deceleration is better than acceleration, and generally don't overspeed! ! ! I wish you a safe journey!