It seems like your asking two different questions: 1) was there reasonable cause to stop you; 2) was there probable cause to arrest for DUI. Right? The answer to your first questions is, "possibly". More information is needed than just "private parking lot" (i.e., were you driving recklessly, hitting curbs, cars, any headlights/taillights out, etc). The answer to the second question is: yes, you can be arrested for DUI in a private parking lot. That said, the initial reason for the contact must still be legal - meaning, an officer cannot stop you simply because he believes you may be DUI. That's the reason I ask about how you were driving or any vehicle damage.
Answered on Feb 17th, 2012 at 1:43 PM