cordon; restricted boundary
A line or boundary set up to restrict public access, often used in contexts like crime scenes, events, or construction sites.
The police set up a cordon around the accident site.
No entry beyond the cordon except for authorized personnel.
cordon materials; barrier tape
Refers to the physical materials used to mark a cordon, such as tape, ropes, or barriers.
The cordon tape was torn, so I bought new tape.
Compound of 規制 (regulation, restriction) and 線 (line).