Traffic jam early warning method and system based on real-time big data

The invention discloses a traffic jam early warning method and system based on real-time big data, and the method comprises the steps: obtaining real-time traffic flow working condition big data, and extracting a real-time traffic flow typical feature value in a T time period; obtaining a real-time traffic flow curve of a real-time traffic flow typical characteristic value-time sequence through data processing; obtaining a first-order derivative and a second-order derivative at the current moment based on the real-time traffic flow curve; according to the change trends of the first-order derivative and the second-order derivative, the first-order derivative is used for traffic jam judgment, the second-order derivative is used for traffic jam trend judgment, data information of the first-order derivative and the second-order derivative is synthesized, and the traffic jam condition and trend are judged; and performing real-time early warning based on a judgment result. According to the method, the real-time tra