What light should I turn on when driving into the tunnel?

Car headlights, also known as car headlights and LED daytime running lights, as the eyes of a car, is not only related to the external image of a car owner, but also closely related to safe driving at night or in bad weather. The use and maintenance of car lights can not be ignored.

Matters needing attention when driving into the tunnel

When driving into the tunnel, you should turn on the position light or low beam light. Before entering the tunnel, please pay attention to the traffic signs or traffic information boards, especially the speed limit signs. The car enters from the road outside the hole, and it takes about seven or eight seconds for the human eye to adapt to the darkness. At this time, the driver's vision drops and he must slow down. When passing through a one-way tunnel, always observe whether the other party is coming, turn on the front and rear lights, and generally it is not appropriate to whistle.

The longest tunnel in China.

1, Qinling Zhong Nanshan Highway Tunnel

Qinling Zhong Nanshan Highway Tunnel is a mountain-crossing passage connecting Xi and Shangluo in Shaanxi Province, China, and its length ranks first in China Highway Tunnel. Located in Zhong Nanshan, Qinling Mountains, it is a part of Baomao Expressway, with a total length of18.02km and a total investment. The pavement has two holes, four lanes and one direction and two lanes, and the design speed is 80km/h, 12km. After the completion of the tunnel, the Qinling natural moat, which restricts the economic development in southern Shaanxi, has become a thoroughfare. The mileage from Xi 'an to Zhashui has been shortened by about 60 kilometers, and the driving time has been shortened from 3 hours to 40 minutes, making it the title of the first tunnel in the world.

2. Jinpingshan Tunnel

Jinping Tunnel Project is located on the main stream of Yalong River at the junction of Muli Tibetan Autonomous County, Yanyuan County and Mianning County in Liangshan Yi Autonomous Prefecture, Sichuan Province. It consists of two parallel single-track tunnels, about 17.5 km long. As the first deep-buried tunnel in China and the second in the world, the maximum buried depth of this tunnel is 2,375 meters, and the tunnel section with the buried depth exceeding 1.500 meters accounts for 73.5% of the total length. It has set a world record for jet ventilation of airless tunnel under the condition of trackless transportation with a single heading of more than 9500m, and it is also one of the longest highway tunnels in China.

3. Tiantai Mountain Tunnel in Qinling Mountains

Tiantai Mountain Tunnel is a controlled project of Baoping Expressway, with a total length of 15.56km, two tunnels and six lanes, with a total investment of 2.45 billion yuan. The vertical height of the tunnel is 70 meters from the ground, and the construction scale and difficulty rank first in the world. 2065438+0165438 On October 20, 2006/KLOC-0, 2000 construction workers moved into the deep mountain of Qinling Mountain, overcoming the difficulties of cold, complicated geology and power shortage, and started construction in an all-round way. On February 28th, 2020, the Qinling Tiantai Mountain Extra-long Tunnel, the control project of Baoji-Pingkan Expressway, was completed, which is one of the longest tunnels in China.