The invention discloses a roadway air door. The roadway air door comprises a door frame, an air door body, a driving mechanism, a first sensor and a control mechanism. The door frame is provided witha doorway for an object to pass through, the air door body is rotatably connected with the door frame, and the air door body is used for sealing or opening the doorway. The driving mechanism is arranged on the door frame and used for driving the air door body to rotate back and forth, the first sensor is used for monitoring and collecting the distance information between the object to pass throughand the doorway, and the first sensor outputs a monitoring signal. The control mechanism receives the monitoring signal, compares the monitoring signal with a preset signal, and controls the drivingmechanism to forwardly or reversely drive the air door body to rotate according to the comparison result. The quick and automatic start and stop of the roadway air door can be realized, and the safetyperformance is improved.