I'll add another thought to this...
Go to radioreference.com and look up the live audio feed for CHP. They have it all over the state in different counties, so you will be able to hear what kind of calls they are responding to and things of that nature. It would help to learn a few of their radio codes as well.
I listen to the SF Bay Area/Golden Gate feed every now and then. It has helped me with avoiding traffic incidents and also you get to hear a pursuit every now and then. I believe they still have one of the least restrictive pursuit policies in the state, as most departments are tightening up severely on your ability to pursue.