A fleet of drones is now on-the-job along the Cheng-Wen-Qiong Expressway, part of Cheng-Ming Expressway in Chengdu, Sichuan Province, to monitor traffic during the Spring Festival travel rush, or "chunyun," on January 21, 2019. On top of monitoring traffic flows, the drones will also be able to pick out drivers who violate traffic rules. [Photo: IC]"

Officers debug drones before being sent to monitor the Cheng-Wen-Qiong Expressway in Chengdu, Sichuan Province, January 21, 2019. The fleet of drones is monitoring traffic during the Spring Festival travel rush or "chunyun." [Photo: IC]"

Police officer operating a drone to monitor traffic on the Cheng-Wen-Qiong Expressway in Chengdu, Sichuan Province, January 21, 2019. [Photo: IC]"

Officers keep tabs on road conditions through images sent back by drones tasked with monitoring Spring Festival traffic on the Cheng-Wen-Qiong Expressway in Chengdu, Sichuan Province, January 21, 2019. [Photo: IC]"