Movable monitoring device for expressway

The utility model relates to the technical field of mobile monitoring, in particular to a movable monitoring device for an expressway, which comprises a base and a camera, a support frame is fixedly arranged on the top wall of the base, and a mounting block for placing the camera is arranged on the support frame. The supporting frame is provided with a sliding assembly connected with the highway guardrail in a sliding mode. A containing groove is formed in the bottom wall of the base, a containing plate is arranged in the containing groove in the direction close to or away from the base in a sliding mode, a driving part for driving the containing plate to slide is arranged in the containing groove, and a plurality of rolling wheels are arranged on the side, away from the base, of the containing plate in a sliding mode and used for rolling on the ground. The traffic jam monitoring system has the advantages that the traffic jam monitoring system can move to a non-monitored road section on a highway section, and