Campus police make themselves known on campus, especially at night, but they aren't as strict as one may think. There are a lot of rules and regulations in place on campus, but they aren't enforced consistently. For example, there is a no-skateboarding rule on campus, but skateboarders are still out and about. The police department also does not enforce the smoking ban, which only allows people to smoke in designated areas. During the day, it's pretty easy to get around the rules on campus.
However, beware of parking enforcement because if campus police are strict on anything, it's parking, mostly because it is such an issue on campus. So always feed your meter on time or you'll probably have a ticket on your windshield when you return. Parking illegally will score you a nice ticket, as well. Parking enforcement makes their rounds regularly and they're strict, so park at your own risk. Campus police and security are also strict about alcohol in the dorms. There is a no-tolerance policy for alcohol on campus, so it's better to do your drinking at the bar or a friend's house off campus. Overall, campus security won't give you a hard time if you're obeying the law, and a lot of the time they're pretty lenient and will let you off with a warning.