Some of you may know, but just in case..
Recently got into some situations, when I was coming out of a car park and the barrier refuse to open.
The box says "No entry record"
One time I was lucky, push the intercom button and someone open the barrier.
2nd time was not, nobody answers the intercom and a frustrated queue of cars formed behind and started honking.
Case 1: I was exiting the car park when I got a ping for a pickup. The pickup location was right behind me in another car park. The gantry had open, but I reverse back to go around and exit via another gantry of the same car park. Big mistake. "No enty record", cannot exit.
Case 2: I enter a open air car park, and then want to get out, but the place was blocked with illegal parking. So I saw some space near the entry to the MSCP. I moved forward to reverse. Unfortunately too near the MSCP and the gate open. I didn't go in, but reverse to get out of the open space car park. Again "No entry record"
Now, this is the problem. You are headed into an EPS car park, your IU is recorded. Then when you get out, your IU record is DELETED when the gantry opens.
If the gantry opens and you didn't go through, but reverse back. Your record is DELETED and you can't get out again - No entry record
If a MSCP is fully enclosed within a open air car park EPS, you drive into the MSCP, your open air car park record is DELETED. Only when you exit the MSCP into the open air car park, then you have an entry record.
So the next time, you see an empty lot just besides the exit gantry, be careful when you're reversing into the lot. Go too far forward and you trigger the exit gantry, your entry record is deleted. Then you reverse and parked happily, until you try to get out - No entry record.