The group meeting of Week 15 of MAGIC Lab was held online on June 11th, 2020. Xinzhou Qi and Bei Chen pre-defensed their dissertation. Their dissertations were "A New Type of mixed flow Cooperative Control in Construction Zone under Intelligent Network connection Environment" and "Research on Evaluation method of intersection signal Control based on trajectory data" respectively. Participants in this report included Dr. Wang Ling, Assistant researcher Yu Chunhui and other members of MAGIC Lab.