Here's a tip that might work, depending on how good you know the area, and how good you are at acting...

I work at a hospital, and many of the cops around town are very familiar with this particular hospital; many of them actually work security detail for it. Needless to say, if/when I am pulled over going to work (I work 11p-7a weekend nights... Sobriety checkpoints like mad!) the officer walks up to my window, sees my scrubs, and then just lets me go. Nothing else. My car is also COVERED in bumper stickers... I know...

If I am transporting anything, I am wearing my scrubs. If I am pulled over and not in the area of the hospital I work for, I tell LEO that I am currently driving for an orientation shift at _________ hospital, with a smile on my face. Usually they engage in some chit chat about health care, or someone they know works there, and then let me go. Cops take care of nurses, teachers, and government employees... Don't attempt this if you're unfamiliar with health care fields, otherwise it could end poorly. Kind of a less-practiced method, but if you can pull it off, go for it!

And please drive smart...