Introduction: Railway barrier seals, like the ISO 17712:2013-certified BS-30C, provide tamper-evident security essential to protecting rail freight across multimodal transport and preventing costly theft or delays.   Ignoring the risks of unauthorized access to rail freight can quickly lead to costly delays, theft, and compromised cargo integrity. Without reliable security measures like railway barrier seals, entire supply chains risk disruption. In the ever-complex landscape of multimodal shipping, the role of trusted container security bolt seal suppliers  becomes unavoidable in mitigating these threats. These bolt seal suppliers provide essential, tamper-evident locking mechanisms designed to withstand manipulation and preserve the safety of freight as it moves across different transport modes, especially by rail.   Functional Roles of Railway Barrier Seals in Multimodal Shipping Operations Railway barrier seals serve as a critical line of defense in seaml...