Prediction method and prediction system for pavement ice formation early warning time

The invention relates to a prediction method and a prediction system for the pavement ice formation early warning time. The prediction method comprises the following steps that: a pavement ice formation sensor detects the road surface temperature of a current road section in real time; the pavement ice formation sensor carries out ice formation detection in the first time when detecting that the first road surface temperature is lower than or equal to the early warning temperature; the actual pavement ice formation temperature and the second road surface temperature are detected in the second time, and are uploaded to an information processing system; and the information processing system carries out calculation to obtain the early warning time. The method and the system have the characteristics that the early warning time of ice formation possibly occurring on the pavement can be precisely and dynamically predicted in real time, and the technical problem of pavement ice formation prediction on highway high-r