At the G1816 Uma Expressway Linxia to the cooperation direction K823+350 (Nanmula Tunnel, Xiahe County, Gannan Tibetan Autonomous Prefecture), the traffic accident that occurred was disposed of at 21:36 on February 11, 2022, and the traffic control at the G1816 Uma Expressway Cooperation South and Cooperation North Toll Stations was lifted, and the road resumed normal traffic.
![The principle of "interval speed measurement" on high speed is very simple, but many car owners are not clear[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)