All events require careful planning on how participants and spectators will get into the event, and when it is over how they will leave. Consideration should be given to the amount of required parking, the distance that will need to be traveled from parking areas to the event. Is it necessary to offer shuttle services or a drop zone for spectators or participants?
Most individuals will also look for the shortest way to the event, even if they face greater personal risk crossing busy streets or jay walking. Traffic control and warning devises are essential to assure safe ingress.
When an event is over, many will not be as careful about following predesignated routes. Temporary barriers or control devices may be disregarded. Many events require participation of local law enforcement to assure traffic control and that the designated routes are followed upon completion of the event.
Law enforcement is also an excellent deterrence to potential civil disobedience that may occur after major concerts or sporting events.