Bar is the central port of the Montenegrin port system and Port of Bar, being the only multimodal hub, which connects three transport modes – maritime, rail and road transport – holds a crucial place in Montenegrin transport system. Port Community System (PCS) in Bar was developed in 2014. PCS has improved port operations and increased competitiveness of the Port of Bar and PCS will be a part of the future Maritime Single Window in Montenegro. The PCS in Bar is still developing. Pilot action of the Port of Bar is related to the upgrade of the Port Community System (PCS). The main results in the pilot will be connection of the PCS with the IT system of Customs (exchange messages with status of MRN number), integration with National Maritime Single Window (preparation of the PCS for receiving and sending messages with National Maritime Single Window), development of the Dangerous goods basic module (pre-notification for all dangerous goods arriving by sea or land, alert management system for IMDG cargo, IMDG History tool, etc.), development of functionality in the PCS to connect the truck in the parking lot with the forwarder, corrections related to reports in the PCS, GUI upgrades, etc. In addition, the pilot project includes new server for the Port Community System. Main stakeholders of the port who use PCS are: public authorities (Customs Administration of Montenegro, Harbour Master’s Office) forwarders, agents, harbour towing companies, etc. The PCS is used in more than 80 companies and institutions with more than 220 users. It is important to point out that the PCS is developed through the different Interreg programmes (SEE, ADRIATIC, ADRION and Italy-Albania-Montenegro). The effect of COVID-19 pandemic is raising many important questions regarding logistic and transport, and developed PCS allows interchange data between all subjects in the logistic chain by avoiding physical communication and paperwork and can be used as a smart working tool.