"Sichuan enters Chu Qing" on the self-driving route to Tibet.

The 3 18 national highway in the south of Sichuan-Tibet line, which we often say, is not as difficult as expected, and the Qinghai-Tibet 109 national highway is not as simple as expected. If we think 3 18 is very tiring, then Qinghai-Tibet 109 can only be said to be even less ideal. 109 There are not so many ups and downs in the mountain roads. Because Qinghai-Tibet 109 has been walking on the high-altitude frozen soil above 4500, the subgrade of Qinghai-Tibet 109 has been sinking due to the high-altitude frozen soil. This kind of settlement leads to the pavement of Qinghai-Tibet 109 being damaged and repaired all the year round, and there are big cracks, potholes and bumps everywhere from Tanggula Pass to Kunlun Pass. Vertical poles are inserted on both sides of the road. Only on the national highway 109 can we see that the national infrastructure is so strong at present, and only the national highway 109 Naqu to Golmud cannot be connected. Coupled with the unsatisfactory roads, 109 has more car accidents, and the roads are so wide. Once a car accident happens, traffic jams are inevitable. In addition, 109 undertakes the transportation of most materials imported from the mainland. Although the traffic volume has decreased a lot because of the epidemic, compared with other routes, the carts are still very dense. It takes a lot of energy for such a big cart to drive more than 800 kilometers on the same road. Also, because of the high altitude and changeable climate, there is a lot of freezing rain and snow all year round. Once it snows, it will aggravate the traffic jam. In addition, the accommodation places along the way are high in altitude and the conditions are not good. The Qinghai-Tibet Highway is not the first choice for entering and leaving Tibet. So, how did the so-called route of "going through gold and Qing Chu" come into being? From about 20 10 to 20 15, the concept of Sichuan, Shanxi and Qing Chu, or the choice of routes to and from Tibet, became a habit. At that time, there were not many routes to choose from in and out of Tibet. At that time, Tibet, Yunnan, was 3 17, and most of the new Tibet was unpaved, so it was difficult for ordinary vehicles to walk and C was difficult to check. Only 3 18, except for Gaoersi Mountain and Tongmai Natural Barrier, it is easier to walk. At that time, the best road conditions were Qinghai-Tibet and asphalt roads, with short distance and few vehicles. The only thing is high altitude, and there are passenger buses operating all the year round. As a result, cyclists in neighboring provinces of Sichuan began to drive in and out of Tibet on a large scale on National Highway 3 18 and National Highway 109. From 20 16, the road surface was extensively renovated on 3 18, and the unpaved road surface was basically eliminated. All oil roads in Yunnan and Tibet were upgraded in an all-round way, and from 3 17, the * * * Jade Expressway was opened to traffic, and the ancient Tang-Fan Road allowed cars to drive simply. Pavement, National Highway 345 and National Highway 3445 have been gradually transformed from miscellaneous lines and fork roads. Although the Qinghai-Tibet Highway is being repaired every year, the roadbed settlement caused by permafrost on the plateau, the heavy trucks driving every year and the rapid increase of go on road trip cars in recent years make the pavement of the Qinghai-Tibet Highway even more unbearable. The Qinghai-Tibet Highway, which used to have the best road conditions, has become the most complicated, difficult to walk and difficult to drive. Due to the high altitude and changeable weather, there is the possibility of hail, rain and snow almost every day along the Qinghai-Tibet Highway. Uneven roads and bad weather lead to frequent traffic accidents on Qinghai-Tibet Highway, and traffic jams have become a common occurrence. Before the outbreak, the Qinghai-Tibet Highway was blocked for ten days and nine days, and the traffic jam was even more than 100 km. 17 The traffic jam in the wind volcano caused the road from Tuotuo River to Wudaoliang to be almost interrupted. It took dozens of hours for trucks to enter Tibet due to temporary traffic control at the Nanshan checkpoint in Golmud. /kloc-In 0/8, the Chumar River Bridge was washed away by the flood, and the Qinghai-Tibet Highway was directly cut off. Some vehicles were trapped for more than a week. 12 years, a Shandong truck driver died because of high rebellion. In recent years, the news that a couple of Anhui license trucks died in Wudaoliang because of traffic jam has been circulating on the Internet for a long time. Under such circumstances, Sichuan's entry into Tibet is only a concept, a noun, and it is no longer a route that must be chosen by self-driving. In addition to the route conditions, the popularity of Sichuan's entry into Qingdao has also been fueled by the platforms of major travel service companies. Because the route is classic, everyone is familiar with it, and the tourism resources in Qinghai are relatively hot, so the tourism service platform has also boosted this concept. Moreover, everyone's herd mentality, others say that this is the only way, and so do I. As everyone knows, everything needs to be viewed dialectically and from a developmental perspective. If the Qinghai-Tibet Highway was the best and most convenient road condition six years ago,