Of course I understand that. This happens in a lot of places. You use rent-a-cops who don't have routine duties as police. You really can't rely exclusively on real cops, because the size of the towns' forces is not going to be enough for there to be enough surplus cops to work events that happen six times a year. No one would hire enough cops to meet that need. Of course the rent-a-cops make stupid mistakes because they're not used to real police work, but RU has to get parking lot security somehow.
Actually, RU is able to do just that. I'll list the following police/LE agencies, easily identifiable by uniform and/or badges, that I've seen providing assistance for RU football games and their primary functions, if notable:
-New Jersey State Police: general security for RU coaches/team and on sidelines
-FBI and Dept of Homeland Security: I know they provide peripheral security support, but they don't make their presence well-known
-Rutgers University Police Department: general patrol, and traffic control in New Brunswick/Piscataway/at lots
-New Brunswick PD: Traffic control on both sides of Landing Lane Bridge
-Piscataway PD: traffic control at River Road
-Middlesex County Park Rangers: traffic control and security for transport buses in Johnson Park
-Monmouth County Sheriffs: general stadium/facility security
-South Brunswick, North Brunswick, and South Plainfield Police departments: additional personnel for stadijm security and Lot patrol
-Middlesex County Sheriffs: a total of 5-10 officers, whom I've only seen in the Blue Lot and by the alcohol dumpsters on the walk to the stadium, who are ticket-writing machines and have virtually no experience in dealing with the general public on a daily basis. RU could really do without in helping build a fan base through fantastic tailgating while still providing adequate LEO presence on gameday