To enhance the efficiency of monitoring the delivery of goods to the destination customs, electronic locks (ELs) with GPS navigation functionality are utilized. These devices are installed on vehicles transporting high-risk goods (such as excisable goods). The locks monitor the movement of the vehicle, transmit information to a central unit regarding the movement, idling, and acceleration of the object. After the vehicle has completed its transit between the customs checkpoint and the destination customs post, there may be a disproportionate redistribution of the locks. This indicates that the flow of vehicles from the destination customs post (DCP) to the customs checkpoint (CC) is greater than in the opposite direction, causing an accumulation of ELs at the CC and a shortage at the DCP. The more numerous the checkpoints and customs posts, the more complex the ELs distribution scheme becomes. In such cases, the challenge is to ensure the correct distribution of ELs between the CC and DCP. To address this issue, Petri nets are used, which ensure the proportional redistribution of ELs. The implementation of new customs control methods increases the overall security and reliability of customs procedures.