Traffic Police Detachment of Changchun Public Security Bureau. The superior unit of Changchun and Dragon Traffic Police Squadron is the Traffic Police Detachment of Changchun Public Security Bureau, which is the administrative organization under the jurisdiction of Changchun Public Security Bureau. It is mainly responsible for the city's road traffic management, traffic safety publicity and education, traffic accident handling, and traffic violation investigation. Changchun and Dragon Traffic Police Squadron is a traffic police squadron under the Traffic Police Detachment of Changchun Public Security Bureau, which is mainly responsible for road traffic management and law enforcement within its jurisdiction.