I'm sure it varies by department/university, but the police at my not-very-big urban university had it's own force comprised of sworn county police officers. Th

I'm sure it varies by department/university, but the police at my not-very-big urban university had it's own force comprised of sworn county police officers. That empowered them to give speeding tickets on the public streets through campus, and they were able to have very good response times to campus emergencies. I never had negative contact with them, but that's anecdotal. The medical campus had emergency buttons on blue poles, and if you pressed one, you'd get like 4 or 5 emergency responses. Campus police, city police, and 2 or 3 of the hospitals had security or police on site.