default expiration delay
The default expiration delay is used for permits supplied by Pay-by-Plate
Sync that do not include an expiration. In this case, AutoVu™
Free-Flow checks with the parking permit provider to see if the permit is still valid. Increasing this value reduces the frequency of the permit checks. For example, if the parking lot charges for parking in increments of 15 minutes, and you also set the default expiration delay to 15 minutes, the system validates the permit with the parking provider every 15 minutes.
