While exiting the parking lot where I work, there is a stop sign before you pull out onto the municipally-owned roadway. People are constantly running right throug this stop sign without even slowing down. We are having a frienldy argument in the office about whether a police officer could give you a ticket for that or not. Is a stop sign still an enforceable stop sign even on private property? And does it make a difference if the stop sign is in the middle or a parking lot or private road, not linking to a public roadway?

Any exit from a private property is to be considered a yield... nothing more.

Private property does not qualify as a highway/roadway under the HTA, which enables an officer to charge you.

It's covered by section 139 of the HTA, which as Reflections said only requires you to yield. The only exception is traffic lights, which are legally enforcable even from private roadways.