Space means there is a restriction to the drivers line of sight

Answer

Closed zone operating space means there is a restriction to the drivers line of sight

Explanation

The line of sight restriction to a driver or while driving is the visible path of travel from your vehicle to your targeted area towards your destination.It is also the area that's visible to a driver while driving.

Closed zone or condition means that there is a restriction to the drivers view or that the space is unavailable in a particular zone.

idk

sorry.

but i may be able to identify that is not you < 3

i do not get the question.