Okay, not to defend a dumn move. (In 21 years...I've made a few) but the uninformed cop bashers are out making assumptions again.
You know what? She's a State Trooper. No...she doesn't have to obey all traffic laws while on duty. In most states, the exemption is written in to law. Don't like it? Too bad. Don't like it? Go to your legislator and have the law changed. Does she have to obey the signs? It's advisable, but not required, maybe she was sent into the area for a reason.
One time I drove into a construction site to check on a vandalism to equipment call and got 2 flat tires from some exposed rebar I couldn't see. May have looked pretty dumb too but there weren't any cameras around.
There are a number of bashers out there who are jealous of the fact that cops get to speed and do other things that the average citizen isn't allowed to.
Every job has its perks and allowances. I don't see you bashing Jon@cao for having access to huge events...free drink and cigars...paid for rooms. Nope..its his job. I'm sure everyone's work has some sort of a benefit or perk or access to things a normal citizen doesn't.