Heavy vehicles continue to ply in the city during peak hours with the authorities turning a blind eye to the erratic parking of trucks on roads for loading and unloading good in areas like Malakpet, Dilsukhnagar, Monda Market, Begum Bazar, Bahadurpura, Nampally and Lal Bazar in Trimulgherry which houses outlets of retail and wholesale merchants Heavy vehicles entering city during peak hours is leading to traffic jams causing inconvenience to commuters