HAFIZABAD  Newly-appointed DPO has asked the traffic police officials to perform duty with dedication, warning that negligent officials will be dealt with sternly. Addressing traffic police officials here the other day, DPO Dr Ghias Gull stressed the need for removing traffic hazards from roads to ensure smooth flow of traffic in the district. He also directed them to take stern action against underage bikers, adding the heavy vehicles must be stopped from entering the city to avoid traffic jam.