Opening a container or pallet costs time and damages packaging, and it only samples what the officer happens to see. A large-tunnel X-ray system images the whole load in one pass, so contraband, undeclared goods and density anomalies are found without unloading — the load stays intact and the inspection is recorded.
Vehicle and cargo scanning is a separate system class from baggage scanners, with drive-through or relocatable configurations. Requirements are quoted per site because shielding, throughput and lane layout drive the design.
Steel penetration is rated 32–40 mm on the large-tunnel models, which covers most loaded freight; the actual result depends on density and load distribution.
Fixed installations need shielding designed for the site. The factory provides the radiation-safety documentation for local approval.
Yes — images are archived with timestamps and can be exported for evidence.