Trailer seals are often used to deter theft and maintain cargo security. What type of seal is manufactured for one time use and typically made of plastic, wire, or thin strips of sheet metal marked with a serial number or an identifier?

Trailer seals are often used to deter theft and maintain cargo security. What type of seal is manufactured for one time use and typically made of plastic, wire, or thin strips of sheet metal marked with a serial number or an identifier?

• A. Indicative seal
• B. Barrier seal
• C. Bolt seal
• D. All of the above

Answer: (A)

Seals used on trailers for cargo security that are made to be used only once and carry a serial number are indicative seals. Their main purpose is to provide a visible, tamper-evident sign that the seal has been opened or could have been tampered with, by showing a unique identifier that can be checked against records. They’re typically lightweight materials like plastic, wire, or thin metal strips, so they’re easy to apply and inexpensive, but not meant to provide strong physical security. Barrier seals and bolt seals are more rugged locking devices designed for higher security needs, so they don’t fit the description of a one-time-use, serial-numbered indicator seal.

Seals used on trailers for cargo security that are made to be used only once and carry a serial number are indicative seals. Their main purpose is to provide a visible, tamper-evident sign that the seal has been opened or could have been tampered with, by showing a unique identifier that can be checked against records. They’re typically lightweight materials like plastic, wire, or thin metal strips, so they’re easy to apply and inexpensive, but not meant to provide strong physical security. Barrier seals and bolt seals are more rugged locking devices designed for higher security needs, so they don’t fit the description of a one-time-use, serial-numbered indicator seal.