Matt's traveler tip of the day.
Have with you the means to find an alternate route to your destination.
Stopping and demanding for a viable detour from the cop directing 3 lanes of traffic through a half lane at an accident scene is not an option.
Oh, and if you've got one of those shexxy dash-mounted GPS devices with the pre-loaded maps on them, especially don't. My hand to Gawd, I had a citizen with a Garmin Nuuvi tell me, "This thing only tells me where I am! It doesn't, like, tell me the future, about, like, what's up ahead!" I leaned in her window, tapped the minus button on the map screen twice, and showed her that life existed beyond the edge of her previous LCD screen map. (This took approximately 1.5 seconds.)
And, while entertaining, ma'am, your partial disrobing does not move me to redirect you through the accident scene where I've got a helicopter landing.