Expressway driving ice-snow skidding and visibility reduction behavior early-warning machine

The utility model belongs to the technical field of traffic safety and particularly relates to an expressway driving ice-snow skidding and visibility reduction behavior early-warning machine. The machine comprises a temperature measurement device and a visibility measurement device which are connected with a single-chip microcomputer. The single-chip microcomputer is used for receiving data of the temperature measurement device and the visibility measurement device and storing corresponding safe speeds. The single-chip microcomputer is also connected with a variable information board used for displaying speed reference information. According to the utility model, the single-chip microcomputer is used to calculate the corresponding safe speeds under different temperature and visibility situations and the variable information board is used to give hints to a driver so that the safety coefficient of driving on an expressway in ice-snow, haze, or other severe weather is increased efficiently. Moreover, the machin