The "keep-out area" marking indicates a section of road that vehicles must not drive into.

Explanation

Marking No. 7 designates an area vehicles must not pass through. Its border is yellow and the diagonal lines are white.

Guides that explain this

• Japanese Signs That Mean the Opposite of What You Assume: Crosswind, End of Restriction, Minimum Speed
• Japanese Road Signs on the Written Test: The 5 Types Explained

Related questions

• The numbers written on the "no U-turn" road…
• Where the marking "no crossing to the right side…
• The "no lane change" marking always prohibits…
• The "route bus priority lane" marking indicates…
• The "priority main carriageway" marking shows…
• The "No Overtaking" sign means vehicles are…