On-wheel sampling permits sealed sample drawal from DPD FCL containers at terminals, streamlining PGA testing and release procedures. Operational framework permitting drawal of representative sealed samples from DPD FCL containers inside an on-wheel sampling area at NSICT Terminal by Customs and authorised PGAs to avoid shifting containers to CFS/warehouses. Importers must notify terminal and Customs in advance, obtain delivery orders, pay on-wheel sampling, seal-cutting and re-sealing charges, and have authorised representatives present. Terminal operators must provide one-day passes, seal cutters, ramps and facilitate provisional/final releases. Boarding/OOC officers will draw, seal, forward samples to designated laboratories and endorse OOC records accordingly. Test bonds and assessing-group procedures apply where relevant.