Many people, parents and relations are fond of visiting their wards resident on university campuses in the evenings and at nights. This visitation period to me only seems to encourage the students to indulge in secret romantic lives by making them go off campus and not return on time. From my perspective, it's better parents visit the kids and meet them right within the campuses and the timing shd be within the sunshine hours, rather than the evening period which to many are dating/romantic hours.
The rate at which students esp the females move out of the campuses in the late evening hours, you will be forced to think that there is some kind of trade fair where some invisible wares are sold in front of the various campuses. Many may not make it back to their hostels that night, as they carried away by many of those roughly parked exotic cars.