Dumpers have been creating havoc on the roads during the peak hours every evening after their return from dumping mud for the four-lane works going on in and around the district and the drivers are usually drunk, said Satyabrat Baruah, a social worker and president of Lions Club of Jorhat on Thursday. “This leads to the risk of accidents, especially on NH-37, AT Road, Mariani Road and busy Ali Road where the traffic police or police are least bothered about the speed limit at certain junctions during peak hours,” he said.