On the afternoon of January 13, in the Liufeng toll station of the Chenzhou branch of Hunan Expressway Group Co., Ltd., an old man hurriedly ran to the toll window and asked the staff on duty for help, saying that when he got off the high-speed service area to rest, his careless son did not pay attention to the work of turning around, drove straight away, and left himself in the service area. Anxiously, his mobile phone was shut down due to arrears and he could not get in touch with his son. Seeing this situation, the high-speed staff immediately began to help the elderly.
Source: Zhuhai Traffic Police
![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=)