The Tailgating rule will be triggered when a second object passes a certain area after the first object, within a configurable period of time. We can exemplify an alarm when a car passes along with another when a toll gate rises. When selecting the tailgating option the following options are displayed:
•Name: Name of the filter.
•Can Trigger Events: Check this option if this rule can trigger events.
•Zone: Zone to which this filter is associated.
•Duration (milliseconds): Time interval between objects entering an area. If after an object enters the area, a second object enters with a time shorter than that configured, the event will be triggered.
•Event Actions: Desired event actions when this rule is triggered. To learn more about alarm actions see chapter How to configure event actions.