Method for obtaining road condition information in real time

The invention discloses a method for obtaining road condition information in real time, which belongs to the field of intelligent transportation and includes deleting wireless mobile data not meeting the requirements of road condition information calculation, performing path speculation, judging validity of calculation on road chain travel time by the wireless mobile data according to travel paths and classified characteristic value obtained through path speculation, and integrating valid data to obtain road condition information. The method uses the existing wireless communication network control signals for demarcating travel tracks of vehicle-mounted cell phones so as to calculate road condition information. Due to the fact that the wireless positioning technology based on the network makes the best of the existing mobile communication facilities and network resources, all-weather road real-time transportation information collection covering all road nets can be achieved with small investment, and therefore the road condition information calculation technology based on wireless network control signals can meet the requirements of real-time road condition calculation in vast areas.