INT 1 · N 2
Restricted or prohibited area limit
Areas & limitsCore
A T-marked boundary identifies the restricted side; the legend states the restriction.
What it means
A broken line with inward ticks bounds a restricted area. Colour and the accompanying legend distinguish restrictions from a complete prohibition on entry.
Why it matters
The line alone does not say what is forbidden. Read the charted legend, notes, and current local regulations.