It’s really great your transit cop friend is ethical.
It’s not like average street cops are held to much in the way of ethics. Really there’s a massive incentive to keep omerta, and there’s dire consequences for stepping out of line and tattling on your fellow cops.
I don’t know how that factors into life as a transit cop, but I have the feeling they’re given enough routine responsibilities they don’t get bored enough to spend all day fucking with people like a normal street cop.